20. Prove the following: sin x – sin 3x / sin^2x – cos^2x = 2 sin x 20. Prove the following: sin x - sin 3x / sin^2x - cos^2x = 2 sin x October 24, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related
