{"id":34712,"date":"2020-07-11T11:27:07","date_gmt":"2020-07-11T05:57:07","guid":{"rendered":"https:\/\/cbselibrary.com\/?p=34712"},"modified":"2020-11-27T15:59:24","modified_gmt":"2020-11-27T10:29:24","slug":"ncert-solutions-for-class-10-maths-chapter-8-ex-8-2","status":"publish","type":"post","link":"https:\/\/cbselibrary.com\/ncert-solutions-for-class-10-maths-chapter-8-ex-8-2\/","title":{"rendered":"NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry Ex 8.2"},"content":{"rendered":"<p>Get the comprehensive Chapter 8 <a href=\"https:\/\/ncertlibrary.com\/ncert-solutions-for-class-10-maths-chapter-8-ex-8-2\/\">Ex 8.2 Class 10<\/a> Maths NCERT Solutions from here and score good marks in CBSE Class 10 Board Examinations<\/p>\n<p>NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry Ex 8.2 are part of NCERT Solutions for Class 10 Maths. Here are we have given Chapter 8 <strong>Introduction to Trigonometry\u00a0Class 10 NCERT Solutions Ex 8.2.<\/strong><\/p>\n<ul>\n<li><a title=\"NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry Ex 8.1\" href=\"https:\/\/cbselibrary.com\/ncert-solutions-for-class-10-maths-chapter-8\/\" target=\"_blank\" rel=\"noopener\">Introduction to Trigonometry Class 10 Ex 8.1<\/a><\/li>\n<li><a title=\"NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry Ex 8.3\" href=\"https:\/\/cbselibrary.com\/ncert-solutions-for-class-10-maths-chapter-8-ex-8-3\/\" target=\"_blank\" rel=\"noopener\">Introduction to Trigonometry Class 10 Ex 8.3<\/a><\/li>\n<li><a title=\"NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry Ex 8.4\" href=\"https:\/\/cbselibrary.com\/ncert-solutions-for-class-10-maths-chapter-8-ex-8-4\/\" target=\"_blank\" rel=\"noopener\">Introduction to Trigonometry Class 10 Ex 8.4<\/a><\/li>\n<\/ul>\n<table style=\"table-layout: fixed; width: 650px;\" border=\"1\">\n<tbody>\n<tr>\n<td><strong>Board<\/strong><\/td>\n<td>CBSE<\/td>\n<\/tr>\n<tr>\n<td><strong>Textbook<\/strong><\/td>\n<td>NCERT<\/td>\n<\/tr>\n<tr>\n<td><strong>Class<\/strong><\/td>\n<td>Class 10<\/td>\n<\/tr>\n<tr>\n<td><strong>Subject<\/strong><\/td>\n<td>Maths<\/td>\n<\/tr>\n<tr>\n<td><strong>Chapter<\/strong><\/td>\n<td>Chapter 8<\/td>\n<\/tr>\n<tr>\n<td><strong>Chapter Name<\/strong><\/td>\n<td>Introduction to Trigonometry<\/td>\n<\/tr>\n<tr>\n<td><strong>Exercise<\/strong><\/td>\n<td>Ex 8.2<\/td>\n<\/tr>\n<tr>\n<td><strong>Number of Questions Solved<\/strong><\/td>\n<td>4<\/td>\n<\/tr>\n<tr>\n<td><strong>Category<\/strong><\/td>\n<td>NCERT Solutions<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry Ex 8.2<\/h2>\n<p><a class=\"button-red\" href=\"https:\/\/cbselibrary.com\/ncert-solutions-for-class-10-maths\/\">NCERT Solutions for Class 10 Maths<\/a><\/p>\n<p>Page No: 187<\/p>\n<p><strong>Question 1.<\/strong> Evaluate the following :<br \/>\n(i) sin 60\u00b0 cos 30\u00b0 + sin 30\u00b0 cos 60\u00b0<br \/>\n(ii) 2 tan<sup>2<\/sup>45\u00b0 + cos<sup>2<\/sup>30\u00b0 \u2013 sin<sup>2<\/sup>60\u00b0<br \/>\n(iii) \\(\\frac { cos45^{ 0 } }{ sec{ 30 }^{ 0 }+cosec{ 30 }^{ 0 } } \\)<br \/>\n(iv) \\(\\frac { sin{ 30 }^{ 0 }+tan45^{ 0 }-cosec{ 60 }^{ 0 } }{ sec{ 30 }^{ 0 }+cosec{ 60^{ 0 } }+cot{ 45 }^{ 0 } } \\)<br \/>\n(v) \\(\\frac { 5cos^{ 2 }{ 60 }^{ 0 }+4sec^{ 2 }{ 30 }^{ 0 }-tan^{ 2 }{ 45 }^{ 0 } }{ sin^{ 2 }{ 30 }^{ 0 }+cos^{ 2 }{ 30 }^{ 0 } } \\)<\/p>\n<p><strong>Solution:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-101457\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2020\/07\/NCERT-Solutions-for-Class-10-Maths-Chapter-8-Introduction-to-Trigonometry-16.gif\" alt=\"NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry 16\" width=\"370\" height=\"1250\" \/><br \/>\n<\/strong><\/p>\n<p><strong>Question 2.<\/strong> Choose the correct option and justify your choice :<br \/>\n(i) \\(\\frac { 2tan{ 30 }^{ 0 } }{ 1+tan^{ 2 }{ 30 }^{ 0 } } =\\)<br \/>\n(A) sin 60\u00b0 (B) cos 60\u00b0 (C) tan 60\u00b0 (D) sin 30\u00b0<\/p>\n<p>(ii) \\(\\frac { 1-tan{ ^{ 2 }45 }^{ 0 } }{ 1+tan{ ^{ 2 }45 }^{ 0 } } =\\)<br \/>\n(A) tan 90\u00b0 (B) 1 (C) sin 45\u00b0 (D) 0<\/p>\n<p>(iii) sin 2A = 2 sin A is true when A =<br \/>\n(A) 0\u00b0 (B) 30\u00b0 (C) 45\u00b0 (D) 60\u00b0<\/p>\n<p>(iv) \\(\\frac { 2tan{ 30 }^{ 0 } }{ 1-tan{ ^{ 2 }30 }^{ 0 } } =\\)<br \/>\n(A) cos 60\u00b0 (B) sin 60\u00b0 (C) tan 60\u00b0 (D) sin 30\u00b0<\/p>\n<p><strong>Solution:<br \/>\n<\/strong><img loading=\"lazy\" class=\"alignnone size-full wp-image-101460\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2020\/07\/NCERT-Solutions-for-Class-10-Maths-Chapter-8-Introduction-to-Trigonometry-17.png\" alt=\"NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry 17\" width=\"362\" height=\"416\" srcset=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2020\/07\/NCERT-Solutions-for-Class-10-Maths-Chapter-8-Introduction-to-Trigonometry-17.png 362w, https:\/\/cbselibrary.com\/wp-content\/uploads\/2020\/07\/NCERT-Solutions-for-Class-10-Maths-Chapter-8-Introduction-to-Trigonometry-17-261x300.png 261w\" sizes=\"(max-width: 362px) 100vw, 362px\" \/><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-101462\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2020\/07\/NCERT-Solutions-for-Class-10-Maths-Chapter-8-Introduction-to-Trigonometry-18.png\" alt=\"NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry 18\" width=\"305\" height=\"192\" srcset=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2020\/07\/NCERT-Solutions-for-Class-10-Maths-Chapter-8-Introduction-to-Trigonometry-18.png 305w, https:\/\/cbselibrary.com\/wp-content\/uploads\/2020\/07\/NCERT-Solutions-for-Class-10-Maths-Chapter-8-Introduction-to-Trigonometry-18-300x189.png 300w\" sizes=\"(max-width: 305px) 100vw, 305px\" \/><\/p>\n<p><strong>Question 3.<\/strong> If tan (A + B) = \u221a3 and tan (A \u2013 B) = 1\/\u221a3; 0\u00b0 &lt; A + B \u2264 90\u00b0; A &gt; B, find A and B.<\/p>\n<p><strong>Solution:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-101464\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2020\/07\/NCERT-Solutions-for-Class-10-Maths-Chapter-8-Introduction-to-Trigonometry-19.gif\" alt=\"NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry 19\" width=\"231\" height=\"272\" \/><br \/>\n<\/strong><\/p>\n<p><strong>Question 4.<\/strong> State whether the following are true or false. Justify your answer.<br \/>\n(i) sin (A + B) = sin A + sin B.<br \/>\n(ii) The value of sin \u03b8 increases as \u03b8 increases.<br \/>\n(iii) The value of cos \u03b8 increases as \u03b8 increases.<br \/>\n(iv) sin \u03b8 = cos \u03b8 for all values of \u03b8.<br \/>\n(v) cot A is not defined for A = 0\u00b0.<\/p>\n<p><strong>Solution:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-101465\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2020\/07\/NCERT-Solutions-for-Class-10-Maths-Chapter-8-Introduction-to-Trigonometry-20.gif\" alt=\"NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry 20\" width=\"583\" height=\"1039\" \/><br \/>\n<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>We hope the NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry Ex 8.2 help you. If you have any query regarding NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry Ex 8.2, drop a comment below and we will get back to you at the earliest.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Get the comprehensive Chapter 8 Ex 8.2 Class 10 Maths NCERT Solutions from here and score good marks in CBSE Class 10 Board Examinations NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry Ex 8.2 are part of NCERT Solutions for Class 10 Maths. Here are we have given Chapter 8 Introduction to &#8230; <a title=\"NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry Ex 8.2\" class=\"read-more\" href=\"https:\/\/cbselibrary.com\/ncert-solutions-for-class-10-maths-chapter-8-ex-8-2\/\" aria-label=\"More on NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry Ex 8.2\">Read more<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[6805],"tags":[36685],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v17.8 (Yoast SEO v18.4.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry Ex 8.2 - A Plus Topper.com<\/title>\n<meta name=\"description\" content=\"NCERT Solutions for Class 10 Maths Chapter 8 Introduction to Trigonometry Ex 8.2 helpful to finish your Home Work. 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