Chapter 2.1 Trigonometric Functions of Associated Angles | সংযুক্ত কোণের ত্রিকোণমিতিক অপেক্ষকসমূহ

<p style="text-align: justify"><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">This Video contains a Detailed Explanation in Bengali from </span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">WBCHSE </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Class 11</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> Chapter 1 </span><span style="font-size:16px;font-family:Arial;color:#0000ff;background-color:transparent">Set Theory (Part 1) </span><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">.</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:#ffffff"> (</span><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">একাদশ শ্রেণী </span><span style="font-size:15px;font-family:Arial;color:#38761d;background-color:transparent">গণিত </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">প্রথম অধ্যায়</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent"> সেটের ধারণা )</span><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">.</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> Watch the video till the end to get a clear idea about the Chapter. </span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">By</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> watching the video, students will clearly understand the lesson. It will enhance their knowledge and enable them to get good marks in the board exams.</span></p><p><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">Class 11</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 1 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Set Theory (Part 1),</span></p><p><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">Video Lesson on </span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent">&nbsp;</span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 1 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Set Theory, </span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent">Online Video class</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">,</span><span style="font-size:15px;font-family:Arial;color:#38761d;background-color:transparent">&nbsp;</span></p><p><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">একাদশ শ্রেণী </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">প্রথম অধ্যায় </span><span style="font-size:15px;font-family:Arial;color:#38761d;background-color:transparent">গণিত</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent"> সেটের ধারণা,&nbsp;</span></p><p><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 1 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Set Theory,</span></p><p><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">West Bengal Board of Higher Secondary Education,&nbsp;</span></p><p><strong><br><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Class 11</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 1 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Set Theory </span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">explanation in Bengali, </span></strong></p>

<p style="text-align: justify"><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">This Video contains a Detailed Explanation in Bengali from </span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">WBCHSE </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Class 11</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> Chapter 1 </span><span style="font-size:16px;font-family:Arial;color:#0000ff;background-color:transparent">Set Theory (Part 2) </span><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">.</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:#ffffff"> (</span><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">একাদশ শ্রেণী </span><span style="font-size:15px;font-family:Arial;color:#38761d;background-color:transparent">গণিত</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">প্রথম অধ্যায়</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent"> সেটের ধারণা )</span><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">.</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> Watch the video till the end to get a clear idea about the Chapter. </span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">By</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> watching the video, students will clearly understand the lesson. It will enhance their knowledge and enable them to get good marks in the board exams.</span></p><p><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">Class 11</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 1 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Set Theory (Part 2),</span></p><p><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">Video Lesson on </span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent">&nbsp;</span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 1 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Set Theory, </span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent">Online Video class</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">,</span><span style="font-size:15px;font-family:Arial;color:#38761d;background-color:transparent">&nbsp;</span></p><p><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">একাদশ শ্রেণী </span><span style="font-size:15px;font-family:Arial;color:#38761d;background-color:transparent">গণিত</span><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">প্রথম অধ্যায়</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent"> সেটের ধারণা,&nbsp;</span></p><p><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 1 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Set Theory,</span></p><p><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">West Bengal Board of Higher Secondary Education,&nbsp;</span></p><p><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Class 11</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 1 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Set Theory </span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">explanation in Bengali,&nbsp;</span></p><p><br></p>

<p style="text-align: justify"><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">This Video contains a Detailed Explanation in Bengali from </span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">WBCHSE </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Class 11</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> Chapter 2 </span><span style="font-size:16px;font-family:Arial;color:#0000ff;background-color:transparent">Relation</span><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">.</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:#ffffff"> (</span><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">একাদশ শ্রেণী </span><span style="font-size:15px;font-family:Arial;color:#38761d;background-color:transparent">গণিত</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">দ্বিতীয় অধ্যায়</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent"> সম্বন্ধ )</span><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">.</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> Watch the video till the end to get a clear idea about the Chapter. </span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">By</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> watching the video, students will clearly understand the lesson. It will enhance their knowledge and enable them to get good marks in the board exams.</span></p><p><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">Class 11</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 1 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Relation,</span></p><p><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">Video Lesson on </span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent">&nbsp;</span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 1 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Relation, </span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent">Online Video class</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">,</span><span style="font-size:15px;font-family:Arial;color:#38761d;background-color:transparent">&nbsp;</span></p><p><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">একাদশ শ্রেণী </span><span style="font-size:15px;font-family:Arial;color:#38761d;background-color:transparent">গণিত</span><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">দ্বিতীয় অধ্যায়</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent"> সম্বন্ধ,&nbsp;&nbsp;</span></p><p><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics </span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 1 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Relation,</span></p><p><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">West Bengal Board of Higher Secondary Education,&nbsp;</span></p><p><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Class 11</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 1 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Relation, </span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">explanation in Bengali,&nbsp;</span></p><p><br></p>

<p style="text-align: justify"><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">This Video contains a Detailed Explanation in Bengali from </span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">WBCHSE </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Class 11</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> Chapter 3 </span><span style="font-size:16px;font-family:Arial;color:#0000ff;background-color:transparent">Compound Angle</span><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">.</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:#ffffff"> (</span><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">একাদশ শ্রেণী </span><span style="font-size:15px;font-family:Arial;color:#38761d;background-color:transparent">গণিত</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">তৃতীয় অধ্যায়</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent"> </span><span style="font-size:16px">যৌগিক কোণের ধারণা </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">)</span><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">.</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> Watch the video till the end to get a clear idea about the Chapter. </span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">By</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> watching the video, students will clearly understand the lesson. It will enhance their knowledge and enable them to get good marks in the board exams.</span></p><p><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">Class 11</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 3 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Compound Angle,</span></p><p><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">Video Lesson on </span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent">&nbsp;</span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 3 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Compound Angle, </span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent">Online Video class</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">,</span><span style="font-size:15px;font-family:Arial;color:#38761d;background-color:transparent">&nbsp;</span></p><p><span style="font-size:15px;font-family:Arial;color:#9900ff;background-color:transparent">একাদশ শ্রেণী </span><span style="font-size:15px;font-family:Arial;color:#38761d;background-color:transparent">গণিত</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">তৃতীয় অধ্যায়</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent"> </span><span style="font-size:16px">যৌগিক কোণের ধারণা</span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">,&nbsp;&nbsp;</span></p><p><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 3 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Compound Angle,</span></p><p><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">West Bengal Board of Higher Secondary Education,&nbsp;</span></p><p><strong><br><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Class 11</span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#ff00ff;background-color:transparent">Mathematics</span><span style="font-size:15px;font-family:Arial;color:#274e13;background-color:transparent"> </span><span style="font-size:15px;font-family:Arial;color:#8a00ff;background-color:transparent">Chapter 3 </span><span style="font-size:15px;font-family:Arial;color:#0000ff;background-color:transparent">Compound Angle, </span><span style="font-size:15px;font-family:Arial;color:#000000;background-color:transparent">explanation in Bengali, </span></strong></p>