AP EAMCET · Maths · Circle
The angle between the pair of tangents drawn from to the circle is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
x2+y2-2x+4y-11=0 Let the angle between tangents=2θ Now, tanθ=rLT where r is the radius of the circle and LT is the length of tangent from the given point. Here LT=S1=12+32-2+12-11 =3 r=12+22+11=4 i.e. tanθ=43 ⇒tan2θ=2×431-169=83-79=-247…
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