Answer:
[tex]R=28.07^o[/tex]
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
In the right triangle PQR
The sine of angle R is equal to divide the opposite side to angle R (PQ) by the hypotenuse (PR)
so
[tex]sin(R)=\frac{PQ}{PR}[/tex]
substitute the values
[tex]sin(R)=\frac{8}{17}[/tex]
Find the measure of angle R
using a calculator
[tex]R=sin^{-1}(\frac{8}{17})[/tex]
[tex]R=28.07^o[/tex]