In the figure, A, B, C are three points on a circle such that the angles 13 subtended by the chords AB and AC at the centre O are 110° and 120 respectively. Determine ZBAC and the degree measure of ZBOC.
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Answered by
1
∠AOB = 110° and ∠AOC = 130°
As we know,
∠AOB + ∠AOC + ∠BOC = 360°
∠BOC = 360° - 110° - 130° = 120°
∠BAC = ∠BOC/2
∴ ∠BAC = 120°/2 = 60°
Answered by
0
Answer:
60°
Step-by-step explanation:
∠AOB = 110° and ∠AOC = 130°
As we know,
∠AOB + ∠AOC + ∠BOC = 360°
∠BOC = 360° - 110° - 130° = 120°
∠BAC = ∠BOC/2
∴ ∠BAC = 120°/2 = 60°
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