Question

Cos 4x=1-8 sin square x cos square x
Why​

Answer 1

Answer:

Ex 3.3, 24 Prove that cos 4x = 1 – 8sin2 x cos2 x Taking L.H.S. cos 4x = 2 (cos 2x)2 – 1 = 2 ( 2 cos2 x – 1)2 -1 Using

Answer 2

Answer:

mjnnnnnnnnmmmmmmmmmmmmnmmnmnmnnmnn

Step-by-step explanation:

mmmnnmmmmmmmnmmmnmnnnnnnnnnnmnnnnnnnnnnnnnn