The angle between the pair of straight lines y2sin2θ−xysin2θ+x2(cos2θ−1)=0 is:
(A)π4
(B)π2
(C)π3
(D)2π3
The angle between the pair of straight lines y2sin2θ−xysin2θ+x2(cos2θ−1)=0 is:
(A)π4
(B)π2
(C)π3
(D)2π3
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