Math, asked by Bhavya5410, 1 year ago

(1-sinA+cosA)(1-sinA+cosA) = 2(1+cosA)(1-sinA)

Answers

Answered by lumbi

2

1-sina+cosa+sin square a-sina cosa+cosa-cosasina+cos square a-sina
=2+2cosa-2sina-2cosasina
=2(1+cosa)(1-sina)
..hence proved

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