How to Find the Integral of cos²(x)dx with Trigonometric Identity and Simplification
∫cos²(x)dx To find the integral of cos²(x)dx, we can use the trigonometric identity: cos²(x) = (1/2)(1 + cos(2x)) Using this identity, the integral becomes: ∫cos²(x)dx = ∫(1/2)(1...