Answer:
Step-by-step explanation:
In the given graph, we have the right triangle PQR, where q is the hypothenuse and r and p are legs.
Now, if we want to the sin function of an angle, it would be like
That is, the sin of an angle is the quotient between its opposite leg and its adjacent leg.
So, in this case, if we apply this defintion to P and R angles, we have
Therefore, the right choices are the second and the last option.