Caitlyn R.

asked • 10/16/22

cos2 𝛽 + cos2 𝜋 2 − 𝛽 = 1

Scott F.

tutor
The typesetting and lack of parentheses makes this difficult to read, but I believe you're asking to prove that cos^2(B)+cos^2((pi/2)-B) = 1. In that case, make use of the cofunction identity and see if the result reminds you of anything.
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10/16/22

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