In the given figure, PQ is the diameter. ∠SQP is equal to
A
40∘
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B
30∘
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C
60∘
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D
50∘
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Solution
The correct option is C60∘ In the given figure PQRS is a cyclic quadrilateral, and opposite angles of a cyclic quadrilateral are supplementary so ∠R + ∠P will be 180 ∠S=90(Angle in a semi circle is 90 degree) In △PSQ ∠PSQ+∠SQP+∠SPQ=180 90+∠SQP+30=180 ∠SQP=180−120=600