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Question

Two tangents are drawn from the point P(1,1) to the circle x2+y22x6y+6=0. If these tangents touch the circle at points A and B, and if D is a point on the circle such that length of the segments AB and AD are equal, then the area of the triangle ABD is equal to

A
2
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B
(32+2)
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C
4
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D
3(21)
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Solution

The correct option is C 4

Now, area of
ABD=2×(ACD)
ABD=2×(12×2×2)=4

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