Math, asked by vmonikaaishwarya, 1 year ago

cos^2((x/3)-x)-cos^2((x/3)+x)

Answers

Answered by amanjyotishi

1

-cos^2 .4x/3 - [-cos^2 . 2x/3]
= -cos^2 . 6x/ 3
= -cos^2 . 2x

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