Prove the following: cos 4x + cos 3x + cos 2x / sin 4x +sin 3x + sin 2x = cot 3x Prove the following: cos 4x + cos 3x + cos 2x / sin 4x +sin 3x + sin 2x = cot 3x October 24, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related