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$\int\frac{\cos\left(a\right)^2}{\sin\left(a\right)\left(1-\sin\left(a\right)\right)}da$
Learn how to solve problems step by step online. Integrate the function (cos(a)^2)/(sin(a)(1-sin(a))). Find the integral. Multiply the single term \sin\left(a\right) by each term of the polynomial \left(1-\sin\left(a\right)\right). We can solve the integral \int\frac{\cos\left(a\right)^2}{\sin\left(a\right)-\sin\left(a\right)^2}da by applying the method Weierstrass substitution (also known as tangent half-angle substitution) which converts an integral of trigonometric functions into a rational function of t by setting the substitution. Hence.