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$\int\frac{\frac{\frac{1-\cos\left(a\right)}{\sin\left(a\right)}}{\sin\left(a\right)}}{1-\cos\left(a\right)}da$
Learn how to solve integral calculus problems step by step online. Integrate the function (((1-cos(a))/sin(a))/sin(a))/(1-cos(a)). Find the integral. Simplify the expression inside the integral. The integral of \csc(x)^2 is -\cot(x). As the integral that we are solving is an indefinite integral, when we finish integrating we must add the constant of integration C.