formula for length of tangent
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It is observed that |TC| is the radius of the circle, so |TC|2=g2+f2–c. This gives the length of the tangent from the point P(x1,y1) to the circle x2+y2+2gx+2fy+c=0
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- Step-by-step explanation:
It is observed that |TC| is the radius of the circle, so |TC|2=g2+f2–c. This gives the length of the tangent from the point P(x1,y1) to the circle x2+y2+2gx+2fy+c=0.
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