We have to find the anti derivative of y = sin x*(cos x)^n
let cos x = y
=> dy/dx = -sin x
=> (-1)*dy = sin x dx
Int [ sin x*(cos x)^n dx]
=> Int [ (-1)* y^n]
=> (-1)* y^(n+1) / (n + 1)
substitute y = cos x
=> [-1/(n+1)]*(cos x)^(n+1)
The required anti derivative is [-1/(n+1)]*(cos x)^(n+1)
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