ANSWER

Step-by-step explanation
We want to find the measure of the angle of the arc PL.
To do this, we first have to find the value of x.
We have that:

According to circle theorem, the angles subtended at the circumference by the same arc are equal. This means that:

Collect like terms and simplify:

Divide both sides by 3:

According to circle theorems, we have that the angle of an arc is equal to twice the angle subtended at the circumference by that arc.
This means that:
