Prove that :
sin^8x - cos^8 x= (1-2cos^x) (1-2sin^2x cos^x)
cbse board 2019 set -1 28th ques
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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
The given equation .
* Sin )^4 Use a^2-b^2 That property will help u
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