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Matrices and Determinants question

2021 · 25 Jul · Shift 2 · Q33

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JEE Main
Mathematics
Matrices and Determinants
2021 · 25 Jul · Shift 2 · Q33

Matrices and Determinants question

2021 · 25 Jul · Shift 2 · Q33

JEE MainMathematicsMatrices and DeterminantsMCQ+4 / −1

The number of distinct real roots of

\left| {\begin{matrix} {\sin x} & {\cos x} & {\cos x} \\ {\cos x} & {\sin x} & {\cos x} \\ {\cos x} & {\cos x} & {\sin x} \\ \end{matrix} } \right| = 0

in the interval

- {\pi \over 4} \le x \le {\pi \over 4}

is :

A
4
B
1
C
2
D
3

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