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Angle between tangents drawn to x^(2) + ...

Angle between tangents drawn to `x^(2) + y^(2) - 2x - 4y + 1 = 0 ` at the points where it is cut by the line ` y = 2x + c " is " (pi)/(2)`, then

A

`|c| = sqrt(5)`

B

`|c| = 2 sqrt(5)`

C

`|c| = sqrt(10)`

D

`|c| = 2 sqrt(10)`

Text Solution

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The correct Answer is:
C
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