Q12 of 141 Page 464

In the given figure, O is the centre of a circle and ∠ABC = 45°. Prove that OA ⊥ OC.

Given: ∠ABC = 45°


We know that ,


∠ AOC = 2×∠ABC


∠ AOC = 2×45 = 90°


∴ ∠AOC = 90°


Therefore


Hence proved.


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