In the followings, a question is followed by data in the form of two statements labelled as I and II. You must decide whether the data given in the statements are sufficient to answer the questions.
What is the least value of $$\theta$$?
(I) The matrix $$ = \begin{bmatrix} \mathbf{\tan \theta} & 0 & 0\\ 0 & 1 & 1 \\ 0 & 1 & 1 \end{bmatrix}$$ is singular
(II) $$0 < \theta < \frac{\pi}{4}$$
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