Question

In the adjoining figure, A, B, C are the points
on the circumference of the circle with centre O.
If m(arc ABC) = 200º and m(arc BC) = 110
then find the m(arc AB)
​

Answer 1

Answer:

m(arc ABC) = 200°

m(arc BC) = 110°

m(arc AB) = arc ABC - arc BC

= 200°-110°

=90°

Therefore, m(arc AB) = 90°

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