Prove the following: 19. sin x + sin 3x / cos x + cos 3x = tan 2x

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Prove the following: 19. sin x + sin 3x / cos x + cos 3x = tan 2x
24
Oct
Prove the following: 19. sin x + sin 3x / cos x + cos 3x = tan 2x Prove the following: 19. sin x + sin 3x / cos x + cos 3x = tan 2x October 24, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 ,
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