Question

In the figure angle ABC = 45°. Prove that OA is perpendicular to OC​

Answer 1

Step-by-step explanation:

As the angle subtended by an arc at the centre is twice the angle subtended by it at any point on the remaining part of the circle . Therefore,

angle AOC = 2angle ABC

angle AOC = 2×45

angle AOC = 90

Hence OA perpendicular OC