Question
Download Solution PDFIn the given figure, O is the centre and ∠ACB = 40°, then ∠AOB =
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
∠ACB = 40°
Concept used:
The angle subtended by an arc of a circle at the centre is double the angle subtended by it on any other point on the remaining part of the circle.
Calculation:
As we know,
∠AOB = 2 × ∠ACB
⇒ ∠AOB = 2 × 40 = 80°
∴ The measure of ∠AOB is 80°
Confusion Points90° + ∠A/2 formula is used in case of triangle
Last updated on Jul 19, 2025
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