Question

In the adjoining figure points
A, B and C lie on the circle
if angle OAB =25, then find value of x
step by step explanation plz!!!

Answer 1

Answer:

115°

Step-by-step explanation:

∆AOB is isoceles with OA=OB

therefore, angle AOB is 130°

now, we know that,

B and A subtend a smaller angle at C and the same points(A & B) subtend bigger angle at reflex AOB. so

angle AOB = 2* angle ACB