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Reduce $\cos\left(x\right)^2$ by applying trigonometric identities
Learn how to solve definite integrals problems step by step online.
$\frac{1+\cos\left(2x\right)}{2}$
Learn how to solve definite integrals problems step by step online. Integrate the function cos(x)^2 from 1 to 3. Reduce \cos\left(x\right)^2 by applying trigonometric identities. Take the constant \frac{1}{2} out of the integral. Simplify the expression inside the integral. The integral of a constant is equal to the constant times the integral's variable.