Choose the correct alternative.The equat...

Choose the correct alternative.The equations of the tangent to the circle `x^2+y^2=4`which are parallel to the line `x+2y+3=0` are

A

` x − 2y = 2`

B

`x + 2y = pm 2 sqrt(3)`

C

`x + 2y = pm 2 sqrt(5)`

D

`x - 2y = pm 2 sqrt(5)`

Text Solution

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The correct Answer is:

C

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