Question

if angle ACB = 35°, then find the measure of angle OAB

Answer 1

we have,

<ACB is on circle and <AOB is on circle.

So, by theorem.

<AOB = 2 • <ACB

= 2 • 35°

=70°

Answer 2

Answer:

55

Step-by-step explanation:

angle ACB = 1/2 of angle AOB

therefore angle AOB = 35*2 = 70

In triangle OAB

OA = OB (radius of same circle)

angle OAB = angle OBA = (180-70)/2 = 55