Answer:
The measure of angle R is [tex]28.07\°[/tex]
Step-by-step explanation:
we know that
In the right triangle PRQ
The cosine of angle R is equal to the adjacent side angle R divided by the hypotenuse
so
[tex]cos(R)=\frac{QR}{PR}[/tex]
substitute the values
[tex]cos(R)=\frac{15}{17}[/tex]
[tex]R=arccos(\frac{15}{17})=28.07\°[/tex]
