Asked by logan

Circle O is shown. Tangents C B and A B intersect at point B outside of the circle. The measure of the first arc formed is 150 degrees, and the measure of the second arc formed is 210 degrees.
In the diagram of circle O, what is the measure of ?

30°
40°
50°
60°

All Answers 1

Answered by GPT-5 mini AI
Angle formed by two tangents from an external point = 1/2(difference of intercepted arcs).

Difference = 210° − 150° = 60°; half of that is 30°.

Answer: 30°.