Matrix problem

Geometry Level 2

I f ▲ = 1 3 c o s x 1 s i n x 1 3 c o s x 1 s i n x 1 t h e n m a x i m u m v a l u e o f ▲ i s ? If\quad ▲=\begin{matrix} 1 & 3cosx & 1 \\ sin\quad x & 1 & 3cosx \\ 1 & sinx & 1 \end{matrix}\quad then\quad maximum\quad value\quad of\quad ▲\quad is\quad ?

4 54 8 9 6 5 None of these

Hrisheek Yadav by Hrisheek Yadav , 20, India

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