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Question
The angle subtended by the semicircle of a circle, on the circumference of the circle is __ .
The angle subtended by the semicircle of a circle, on the circumference of the circle is
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Solution
Let O be the centre of the circle. Since angle subtended by the arc AB at the centre is half the angle subtended in the other segment, and since ∠AOB = 180∘, ∠APB = ∠AOB = 90∘
Let O be the centre of the circle. Since angle subtended by the arc AB at the centre is half the angle subtended in the other segment, and since ∠AOB = 180∘, ∠APB = ∠AOB = 90∘
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