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AP EAMCET202022 Sep 2020Evening ShiftMathematicsCircleActual

The length of the tangent from (6,8) to the circle x^2+y^2=4 is

Options

  1. A6
  2. B2 6
  3. C4 6
  4. D5 6

Correct answer

C. 4 6

Step-by-step solution

Let P=(6,8) S: x^2+y^2-4=0 aligned Length of tangent & = S₁₁ = (6)^2+(8)^2-4 & = 36+64-4 = 96 =4 6 aligned Hence, option (3) is correct.

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