SOLUTION: prove this cosa /(1+sina) = seca (1- sina)

SOLUTION: prove this cosa /(1+sina) = seca (1- sina)

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Question 733648: prove this
cosa /(1+sina) = seca (1- sina)
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
prove this
cosa /(1+sina) = seca (1- sina)
start with right side:
sec(1-sin)=(1/cos)(1-sin)
=((1-sin)/cos)*((1+sin)/(1+sin))
=(1-sin^2)/(cos(1+sin))
=cos^2/cos(1+sin)
=cos/(1+sin)
verified: right side=left side
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