Question

Angle between tangents drawn from a point p to circle x^=y^-4x-8y+8=0 is 60 degrees then length of chord of contact of p is

Answer 1

Answer:

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Answer 2

Answer:

Take tan(x/2)=r/✓S11-----(1)

Step-by-step explanation:

We know that If p(x1,y1) is a point lying outside the circle S=0 then the

length of the tangent from P is ✓S11.

Now given angle is X=60°

Centre C=(2,4) radius r=✓12

Now substitute the values in equation 1.

Tan(60/2)=✓12÷✓S11

1÷✓3=✓12÷✓S11

Therefore ✓S11=6