Q. 285.0( 2 Votes )

# In Fig. 16.204, if ∠*ABC*= 45°, then ∠*AOC*=

A. 45°

B. 60°

C. 75°

D. 90°

Answer :

We know that,

An angle subtended by an arc at the centre of the circle is double the angle subtended at any point on the circle

∠AOC = 2 ∠ABC

= 2 * 45°

= 90°

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