prove that angle in semi circle is 90
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make a perpendicular line in middle
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Answer: [100% CORRECT]
<PRQ = 180/2 = 90
Step-by-step explanation:
To find: <PRQ = 90
∴ <POQ = 180 (Angle on a straight line)
∴ <POQ = 2 <PTQ [Angle subtended by an arc at the centre is twice the angle subtended by it any point on circle]
∴ <PRQ = 180/2 = 90
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