Question

What is the measure of BA (the minor arc) in the diagram below?

D
B
72"
A
C
A. 1440
B. 216°
C. 36°
D. 72°
helppp plsss

Answer 1

144

Explanation:

you have to use this formula

m CBA>= a

BA ( =2a

CBA>=72

BA )=72×2

hopefully its helpful

Answer 2

A

Explanation:

The inscribed angle ABC is half the measure of its intercepted arc AB, then

arc AB = 2 × ∠ ABC = 2 × 72° = 144° → A