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Let A be the centre of the circle x^2+y^...

Let A be the centre of the circle `x^2+y^2-2x-4y-20=0`. If the tangents at the points B (1, 7) and D(4,-1) on the circle meet at the point C find the area of the quadrilateral ABCD.

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MODERN PUBLICATION-CONIC SECTIONS-EXERCISE
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  9. Let P(x1,y1) be a point and let ax + by +c =0 be a line. If L (h, k) i...

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  10. Let A be the centre of the circle x^2+y^2-2x-4y-20=0. If the tangents ...

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