CBSE Class 10 Answered
if from any point on the common chord of two intersecting circles,tangents be drawn to the circles,prove that they are equal.
Asked by | 23 Feb, 2013, 15:49: PM
Let the two circles intersect at points M and M. MN is the common chord.
Suppose O is a point on the common chord and OP and OQ be the tangents drawn from A to the circle.
OP is the tangent and OMN is a secant.
According to the theorem which says that if PT is a tangent to the circle from an external point P and a secant to the circle through P intersects the circle at points A and B, then PT2 = PA
Answered by | 23 Feb, 2013, 20:19: PM
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