Answer:
x=6
Explanation:
So we have the difference of the intercept arcs divided by 2 is the angle formed by the two tangents there.
So we have

Clear the fraction by multiplying both sides by 2:

Distribute:

Combine like terms on the left hand side:

Simplify:

Subtract 10x on both sides:

Subtract 10 on both sides:

Divide both sides by 4:
