Learn how to solve integrals of rational functions problems step by step online. Solve the trigonometric equation 4sin(x)^2-9cos(x)^2=0. Applying the trigonometric identity: \sin\left(\theta \right)^2 = 1-\cos\left(\theta \right)^2. Multiply the single term 4 by each term of the polynomial \left(1-\cos\left(x\right)^2\right). Combining like terms -4\cos\left(x\right)^2 and -9\cos\left(x\right)^2. We need to isolate the dependent variable x, we can do that by simultaneously subtracting 4 from both sides of the equation.

Solve the trigonometric equation 4sin(x)^2-9cos(x)^2=0