Question

3. In the adjoining figure, O is the centre of the circle. If
LABC = 45°, then prove that OA.LOC. (Exemplar)​

Answer 1

Answer:

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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,

∠AOC = 2 ∠ABC

⇒ ∠AOC = 2 x 45° = 90°

Hence,OA perpendicular OC