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Question

Let us get familiarized with some terms.

1) S: It is the equation of circle.

S1: We get S1 by substituting a point x1,y1 in the equation of the circle

S1=x21+y21+2gx1+2fy1+c

2) T: We get T by replacing x2 with xx1,y2 with yy1,x with x+x12,y with y+y12 and xy wih xy1+yx12.C

remains the same

Txx1+yy1+g(x+x1)+f(y+y1)+c

These are really helpfull in finding the equation of tangent; chord of contact, pair of tangents from

appoint and determining if a point lies inside a circle.

If S1<0, the point lies inside the circle

If S1=0 the point lies on the circle and if S1>0 the point lies outside the circle.

If you are comfortable and read this, click true to more to the question.


A

True

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B

False

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Solution

The correct option is A

True


By clicking true, you will be taken to the next question.


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