Math, asked by suraj233226, 1 year ago

under rute 1+cosA/1-cosA

Answers

Answered by fairdeent

SQRT [(1 - cos A) /(1 + cos A ) ]

multiply top and bottom with SQRT(1 + cos A)

= SQRT [ (1 - cos^2(A)) /(1 + cos A)^2 ]

= SQRT [ sin A /(1 + cos A) ]^2

= sin A / (1 + cos A)

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