Let A be the centre of the circle \[{{x}^{2}}+{{y}^{2}}-2x-4y-20=0,\] and \[B(1,7)\] and \[D(4,-2)\] are points on the circle then, if tangents be drawn at B and D, which meet at C, then area of quadrilateral ABCD is-

Let A be the centre of the circle \[{{x}^{2}}+{{y}^{2}}-2x-4y-20=0,\]

1.	Let A be the centre of the circle \[{{x}^{2}}+{{y}^{2}}-2x-4y-20=0,\] and \[B(1,7)\] and \[D(4,-2)\] are points on the circle then, if tangents be drawn at B and D, which meet at C, then area of quadrilateral ABCD is-
A.	150
B.	75
C.	75/2
D.	None of these
Answer» C. 75/2

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Let A be the centre of the circle \[{{x}^{2}}+{{y}^{2}}-2x-4y-20=0,\] and \[B(1,7)\] and \[D(4,-2)\] are points on the circle then, if tangents be drawn at B and D, which meet at C, then area of quadrilateral ABCD is-

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