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If the line lx + my = 1 be a tangent to ...

If the line `lx + my = 1` be a tangent to the circle `x^(2)+y^(2)=a^(2)`, then the point `(l, m)` lies on

A

A straight line

B

A Circle

C

A parabola

D

An ellipse

Text Solution

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The correct Answer is:
B
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