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Question: Answered & Verified by Expert
The length of tangent from the point $(5,1)$ to the circle $x^2+y^2+6 x-4 y-3=0$, is
MathematicsCircleJEE Main
Options:
  • A $81$
  • B $29$
  • C $7$
  • D $21$
Solution:
2274 Upvotes Verified Answer
The correct answer is: $7$
Length of tangent is given by $L_T=\sqrt{S_1}=\sqrt{49}=7$.

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