Exercise
$\cos\left(x\right)\cdot\left(2\cos\left(x\right)+1\right)=0$
Step-by-step Solution
Learn how to solve problems step by step online. Solve the trigonometric equation cos(x)(2cos(x)+1)=0. Break the equation in 2 factors and set each factor equal to zero, to obtain simpler equations. Solve the equation (1). The angles where the function \cos\left(x\right) is 0 are. Solve the equation (2).
Solve the trigonometric equation cos(x)(2cos(x)+1)=0
Final answer to the exercise
$x=\frac{1}{2}\pi+2\pi n,\:x=\frac{3}{2}\pi+2\pi n\:,\:\:n\in\Z$