题目内容
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纠错
Let S be a point on a circle whose center is R. If PQ is a chord that passes perpendicularly through the midpoint of RS, then the length of arc PSQ is what fraction of the circle`s circumference?
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A$$\frac{1}{π}$$
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B$$\frac{1}{3}$$
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C$$\frac{\sqrt{3}}{{π+2}}$$
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D$$\frac{1}{2\sqrt2}$$
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E$$\frac{2\sqrt3}{3π}$$
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