Question

7. In figure if O is the centre of circle then the
measure of 2 ACB is​

Answer 1

Answer:

Given, O is the center of the circle and △AOB is an equilateral triangle.

Thus, ∠AOB=600

We know that the angle at the center of the circle is twice the angle at the circumference subtended by the same arc.

Thus, ∠AOB=2∠ACB

⇒60=2∠ACB

⇒∠ACB=260

⇒∠ACB=300

Answer 2

Answer:

angle ACB = 40°

Step-by-step explanation:

angle ACB = 1/2 AOB

(the  angle at the circumference of the circle by the same arc)

angle ACB = 80°/2 =40°

Hope it helps u