Circle O is shown. Line segments C O And A O are radii. Lines are drawn from points C and A to point B to form chords B C and B

Question

3 years ago

13

A. Angle C B A is 80 degrees. What is the measure of angle COA?

2 answers:

Nataliya [291] · Answer 1 · 2022-08-03T08:19:32+03:00

8 0

Answer: C is the answer

because i am very good at maths

muminat · Answer 2 · 2022-08-03T07:01:11+03:00

Answer:

∠COA = 160°

Step-by-step explanation:

The angle intercepted on opposite side of the circle from an ARC has a measure of HALF of the Arc.

∠CBA is HALF of the ARC CA

∠CBA is given as 80°

So Arc CA is 80 * 2 = 160°

Now,

∠COA is an intercepted angle that is at the CENTER. This angle has same measure as the Arc it is intercepted from (Arc CA).

Hence,

∠COA = Arc CA