Question

the angle subtended by an arc of a circle is double the angle subtended by it at any point on the boundry of the circle​

Answer 1

Step-by-step explanation:

Theorem: The angle subtended by an arc of a circle at its centre is twice of the angle itsubtends anywhere on the circle'scircumference. The proof of this theorem is quite simple, and uses the exterior angletheorem – an exterior angle of a triangle is equal to the sum of the opposite interiorangles.