Calculate the length of tangent from a point 15 cm away from the
centre of a circle of radius 9 cm.
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15
×
9 = 135
may be ans 135
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Answer:
simple sub
the length of the tangent from the point P(x1,y1) to the circle x2+y2+2gx+2fy+c=0.
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Length of the Tangent to a Circle
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