Question

Prove that :
sin^8x - cos^8 x= (1-2cos^x) (1-2sin^2x cos^x)

cbse board 2019 set -1 28th ques​

Answer 1

sin^8x - cos^8 x= (1-2cos^x) (1-2sin^2x cos^x)

The given equation .

* Sin )^4 Use a^2-b^2 That property will help u