The system of linear equation ( \sin \theta) x+y-2 z=0,2 x-y+(\cos \theta) z=0 and -3 x+( \sec \theta) y+3 z=0, where \theta \neq(2 n+1) \frac{\pi}{2}, has non-trivial solution for

Correct Answer is : no value of θ

\theta=n \pi+\frac{\pi}{4}, n \in Z

\theta=\tan ^{-1} (\frac{3}{4})