JEE MAIN - Mathematics Hindi (2021 - 18th March Morning Shift - No. 2)
समीकरण $$\left| {\matrix{
{1 + {{\sin }^2}x} & {{{\sin }^2}x} & {{{\sin }^2}x} \cr
{{{\cos }^2}x} & {1 + {{\cos }^2}x} & {{{\cos }^2}x} \cr
{4\sin 2x} & {4\sin 2x} & {1 + 4\sin 2x} \cr
} } \right| = 0,(0 < x < \pi )$$ के हल हैं
$${\pi \over {12}},{\pi \over 6}$$
$${\pi \over 6},{{5\pi } \over 6}$$
$${{5\pi } \over {12}},{{7\pi } \over {12}}$$
$${{7\pi } \over {12}},{{11\pi } \over {12}}$$
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