- A45°
- B90°
- C120°
- D180°
Step-by-Step Solution
If angle APB = 90°, then angle AOB = 180 - 90 = 90 deg (since the two radii and tangents form a square here).
Answer: B) 90°
If two tangents drawn from an external point to a circle are perpendicular to each other, the angle subtended by the two points of contact at the centre is:
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