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The angle between the pair of straight l...

The angle between the pair of straight lines `y^2sin^2 theta-xy sin ^2 theta +x^2(cos ^2theta -1) =0` is

A

`(pi)/4`

B

`(pi)/2`

C

`(pi)/3`

D

`(2pi)/(3) `

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • P_1 and P_2 are the length of perpendicular from origin to the line x sec theta + y cosec theta =a and x cos theta - y sin theta = a cos 2 theta then ….... of the following is valid.

    A
    `4P_1^2 + P_2^2 = a^2`
    B
    `P_1^2 + 4P_2^2 = a^2`
    C
    `P_1^2 + P_2^2 = a^2`
    D
    None of these

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