NCERT Solutions for CBSE Class 10 Maths Trigonometry Ex 8.2 Q2

http://www.learncbse.in/ncert-class-10-math-solutions/

http://www.learncbse.in/ncert-solutions-for-class-10-maths-chapter-8-introduction-to-trigonometry/

http://www.learncbse.in/rd-sharma-class-10-solutions-chapter-5-trigonometric-ratios/

00:02 CBSE class 10 maths NCERT SolutionsChapter 8 Trigonometry Exercise 8.2 Q2. solve problems on Trigonometric Ratios of Specific Angles

00:08 (i) (2tan30°) / (1+tan2 30°)

00:23 Find Values of Trigonometric Ratios for Standard Angles 0°, tan 30°, tan 45°, tan 60°, 90°

00:35 simplify the fractions involving surds or radicals

01:15 check the solution by determining Values of Trigonometric Ratios for Standard Angles

01:32 (ii)

01:46 Trigonometry table

Values of Trigonometric Ratios for Standard Angles 0°,sin 30°, 45°,cos 60°, 90°

02:42 (iii) sin 2A = 2 sin A is true when A =

02:59 Verify by substitution

03:53 (iv)

04:06 Values of Trigonometric Ratios for Standard Angles (Trigonometry table)

04:20 solve fractions

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