# Question 79110

Jul 6, 2017

${50}^{\circ}$

#### Explanation:

I am going to assume you are speaking of a plane mirror. I am also going to assume the angle is made with respect to the normal which would then tell me that color(blue)[50^@ is the $\textcolor{b l u e}{\text{angle of incidence}}$. In that case,

$\textcolor{w h i t e}{- - - a a a}$

So, we can conclude that,

color(white)(aaaaaaaaaaaa)color(blue)[theta_"incidence"]=color(red)[theta_"reflection"

therefore,

color(white)(aaaaaaaaaaaaaaa)color(blue)[50^@]=color(red)[50^@#