Question

∠ABD is formed by a tangent and a secant intersecting outside of a circle. If minor arc AC = 72° and minor arc CD = 132°, what is the measure of ∠ABD?
A) 30°
B) 36°
C) 42°
D) 48°

Answer 1

A is correct:

m∠ABD=1/2(mCD-mAC)

m∠ABD=1/2(132-72)

m∠ABD=1/2(60)=30

Answer 2

Answer:

c 42 degrees

Step-by-step explanation: