Answer:
30
Explanation:
We must apply a formula here in order to solve this problem.
(aka as the Angles Outside Circle Therom)
X=1/2(Outer Arc- Inner Arc)
Our Inner arc is 150, to find the outer arc we do 360-150 which is 210
Now that we have both arcs, we plug them into the equation.
X=1/2(210-150)
X=1/2(60)
X=30