Math, asked by SubhanjanDatta, 10 months ago

prove that :
cos ^ 2 ( π\8 - theta /2 ) - sin ^2 ( π\8 + theta /2) = 1/√2 cos theta .

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Answered by syedashiq2005

1

Answer:

Hey there!

Please do make me brainliest if it was helpfull :)

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