Question

cos^2x=1/2

Answer 1

Take square root on both sides.
Don't forget to put \(\pm\) on the right hand side.
Solve for x.

Answer 2

\(\normalsize\color{blue}{ \cos^2x=\frac{1}{2}}\) taking the square root of both sides,

\(\normalsize\color{blue}{ \cos x=\sqrt{ \frac{1}{2} } }\) now simplifying the root,

\(\large\color{blue}{ \cos x= \frac{\sqrt{1} }{\sqrt{2} } }\)

\(\large\color{blue}{ \cos x= \frac{1 }{\sqrt{2} } }\) top and bottom times √2,

\(\large\color{blue}{ \cos x= \frac{\sqrt{2}}{2} }\)

Answer 3

tell me if you need more help with your problem.

Answer 4

thanks