2.
In the figure O is the centre of the circle.
Central angle of arc BDC is 110°.
a) What is angle BAC?
b) What is angle BDC?
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Answer:
bac=55
bdc=125
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Step-by-step explanation:
given boc =110
bac=1/2×boc (same chord bc)
=55
bdc=180-55=125(quad)
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