For this case we can use the law of the sine to solve the problem. We have then: [tex]5 / sine (68) = 5 / sine (x)
[/tex] From here, we clear the value of x. We have then: [tex]sine (x) = (5/5) * (sine (68))
[/tex] Rewriting we have: [tex]sine (x) = (1) * (sine (68))
sine (x) = sine (68)
x = arcsine (sine (68))
x = 68[/tex] Answer: The angle R is given by: x = 68 degrees option B
