1.

Integral Cos x/1-Cos²x​

Answer»

ANSWER:

Step-by-step explanation:

1- COS^2(x) = sin^2(x)

let u = sin(x)

then DU = cos(x)dx

then integral BECOMES = > Integral of du / u^2

                                       = u^(-2+1)/-2+1

                                       = -1/sinx  + C



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