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If a line y-mx bisects the anglebetween ...

If a line `y-mx` bisects the anglebetween the lines `(tan^(2) theta+cos^(2) theta)x^(2)+2xy tan theta -y^(2) sin^(2)theta=0` when `theta` is `60^(@)` then : `sqrt(3)m^(2)+4m=`

A

1

B

`1/(sqrt(3))`

C

`sqrt(3)`

D

`7sqrt(3)`

Text Solution

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The correct Answer is:
C
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