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Question

An equilateral triangle inscribed in the circle x2+y2+2gx+2fy+c = 0 then its side is


A

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B

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C

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D

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Solution

The correct option is B


r=g2+f2cAD2=a2a24AD=32ar=23AD=a3a=3r=3(g2+f2c)


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