Answers:
10) [tex]30\°[/tex]
11) [tex]30\°[/tex]
12) [tex]45\°[/tex]
Step-by-step explanation:
In this problem we have to find the angle of each expression:
10) [tex]cos(x)=\frac{\sqrt{3}}{2}[/tex]
[tex]x=cos^{-1}(\frac{\sqrt{3}}{2})[/tex]
[tex]x=30\°[/tex]
11) [tex]sin(x)=\frac{1}{2}[/tex]
[tex]x=sin^{-1}(\frac{1}{2})[/tex]
[tex]x=30\°[/tex]
12) [tex]tan(x)=1[/tex]
[tex]x=tan^{-1}(1)[/tex]
[tex]x=45\°[/tex]
