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find the common tangents of the circle...

find the common tangents of the circle `x^2+y^2=2a^2` and the parabola` y^2=8ax`

A

`x = pm ( y + 2a)`

B

`y = pm (x + 2a)`

C

`x = pm (y +a)`

D

`y = pm (x +a )`

Text Solution

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The correct Answer is:
B
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