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Prove : (sinA-cosA+1)/(sinA+cosA-1) = (1+sinA)/cosA
15 years ago

Answers

Reiny
multiply top and bottom of the left side by
(sinA + cosA + 1) and expand carefully

remember sin^2A + cos^2A = 1
and in the bottom replace the
-cos^2A with (1-sin^2A)
15 years ago

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