Math, asked by devyanshurathore583, 1 month ago

( sec A + tan A ) ( 1 - sin A )​

Answers

Answered by sandy1816
2

(seca + tana)(1 - sina) \\  = ( \frac{1 + sina}{cosa} )(1 - sina) \\  =  \frac{1 -  {sin}^{2}a }{cosa}  \\  =   \frac{ {cos}^{2}a }{cosa}  \\  = cosa

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