In the diagram below, ab and bc are tangent to o. which expression gives the measure ∠abc? a. 1/2(240° - 120°) b. 1/2(240° + 120°) c. 240° + 120° d. 240° - 120°

A

Step-by-step explanation:

The exact summary for the angle between two tangents (or a tangent and a secant) is 1/2 the difference between the two intercepted arcs.

The two intercepted arcs are 240 and 120 (givens)

So the angle between the two  tangents is 1/2 ( 240 - 120) which is A

2/5

step-by-step explanation:

answer:

c. the third graph