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$\frac{2281\int_{0}^{\frac{\pi}{2}}\cos\left(x\right)^2dx}{125}$
Learn how to solve integral calculus problems step by step online. Find the integral (int(cos(x)^2)dx&0&pi/22281)/125. Simplifying. Rewrite the trigonometric expression \cos\left(x\right)^2 inside the integral. Take the constant \frac{1}{2} out of the integral. Simplify the expression inside the integral.