### Home > CCA2 > Chapter 12 > Lesson 12.1.2 > Problem 12-29

12-29.

For each of the following equations, find the solutions that lie in the domain 0 ≤

*x*< 2*π*. Homework Help ✎2 sin (

*x*) − 1 = 02 cos (

*x*) = −2 sin(

*x*) =cos(

*x*) = 1

You can either draw a unit circle to find all possible solutions, or solve the equation graphically.

In what quadrants is cos(*x*) negative?

Picture a unit circle. At what angle is the adjacent side the same length as the hypotenuse?