Suppose Q is a point on the circle With centre P and radius 1, as shown in the figure; R is a point outside the circle such that QR = 1 and ∠QRP=2o. Let S be the point where the segment RP intersects the given circle. Then measure of ∠RQS equals
A
86o
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B
87o
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C
88o
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D
89o
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Solution
The correct option is B87o ∠RQP=176o ∠SPQ=2o ∠SQP=89o(SP=PQ) ∠SQR=176−89=87o