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 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related
