### Home > A2C > Chapter 13 > Lesson 13.1.4 > Problem 13-72

13-72.

Solve 2 sin(*x*) cos(*x*) + cos(*x*) = 0. Give your answers in degrees or radians. Homework Help ✎

cos(*x*) is a common factor. Factor it out and use the Zero Product Property. Give all answers between 0° and 360° or 0 and 2π.