↔ AC

A, C, with, \overleftrightarrow, on top is tangent to circle

O

OO at point

C

CC.

What is the measure of

∠

O

A

C

∠OACangle, O, A, C?

∘

∘

degrees

O

O

A

A

B

B

C

C

4

5

∘

45

∘