Question

In Fig. 10.36, A,B and C are three points on a
circle with centre O such that angle BOC = 30° and
angleAOB = 60°. If D is a point on the circle other
than the arc ABC, find angleADC.



$help \: me \: out \: to \: solve \: this \: sum$
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Answer 1

Answer:

angle ADC = 45°

hope it's useful for you

Answer 2

Answer:

The angle subtended by an arc at the centre is double the angle subtended by it at any point on the remaining part of the circle.

Now coming back to the question

we have to find out the value of Angle ADC

As you know angle AOC is double of the angle ADC.

Therefore, if the sum of the angle AOC makes 90 (60+30).

Angle ADC will be halved of that which is 45.

I hope it's clear...