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A circle with centre and radius intersects the line at the points and . If the tangents at and intersect at the point , then is equal to
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A Circle having the centre and radius .
So, the equation of circle will be
Now, it is given passes through two points on circle and tangents are drawn at intersect at ,
So, will be chord of contact.
Now equation of chord of contact will be
Now comparing above equation with , we get
Now on solving above relation we get,
Hence, the value of
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