### Home > PC3 > Chapter 5 > Lesson 5.1.2 > Problem5-22

5-22.

​Solve for $x$ on the indicated domain. Begin by solving for the function. Recall that if no domain is indicated, the domain is all real numbers. Remember to use a unit circle or graph as a visual reminder.   Homework Help ✎

1. $2\sin(x)-1=0$

$2\sin(x)=1$

1. $2+2\cos(x)=0$

$2\cos(x)=-2$

1. $\sqrt{2}-2\sin(x)=0$

$\sqrt{2}=2\sin(x)$

1. $\cos(x)+3=0$

$\cos(x)=-3$