Example 15 Prove that cos( π/4+ x) + cos(π/4 – x) = root 2 cos Example 15 Prove that cos( π/4+ x) + cos(π/4 - x) = root 2 cos October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related
