Mht Cet
Straight Lines And Pair Of Straight Lines
MHT CET 2019 2nd May Evening Shift
MCQ+2 / -02019
If lines represented by \(\left(1+\sin ^2 \theta\right) x^2+2 h x y+2 \sin \theta y^2=0, \theta \in[0,2 \pi]\) are perpendicular to each other then $\theta=$ ...........