Question

the length of tangent to circle are ?​

Answer 1

Answer:

the length of tangent to circle are ?

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.

Answer 2

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If the radius of the circle is 'r' and the tangents are drawn from a point at a distance 'd' from the center of the circle, then the length of the tangent to the circle from the external point 'l' is given as: √(d² - r²).

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