Question

(1-sinA+cosA)^2 = 2(1+cosA)(1-sinA ).​

Answer 1

(1-sin o)^2 + con^2o -2(1-sino +cos o)

1+sin^2 o - 2sin o + cos^2 o +2coso - 2sinocoso

1+1 -2sino +2coso -2sinocoso

2(1+coso)(1-sino)

Proved