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ʃ(1-sin A)^2 cos A dA

please help.i don't know how to solve this.i need your help

1 answer

simple substitution:

let u = sinA and we have
du = cosA dA

ʃ(1-u)2 du
= u - u2 + u3/3
= sinA - sin2A + sin3A/3 + C