### Home > INT3 > Chapter 12 > Lesson 12.1.2 > Problem 12-25

12-25.

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

*x*< 2*π*? Homework Help ✎2sin(

*x*) – 1 = 02cos(

*x*) = –2sin(

*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?