What is the measure of angle R?

Enter your answer as a decimal in the box. Round only your final answer to the nearest hundredth.

What is the measure of angle R Enter your answer as a decimal in the box Round only your final answer to the nearest hundredth class=

Respuesta :

Answer:

22.62 degrees

Step-by-step explanation:

Right triangle

  you can pick cosine or sine to calculate angle r

        sin r = opposite leg/ hypotenuse = 5/13

                arcsin(5/13) = 22.62 degrees

 

         cos r =  12/13  

                r = arccos(12/13) =  22.62 degrees