JEE MAIN - Mathematics Hindi (2021 - 26th August Evening Shift - No. 11)
मान निकालें
$$2\sin \left( {{\pi \over 8}} \right)\sin \left( {{{2\pi } \over 8}} \right)\sin \left( {{{3\pi } \over 8}} \right)\sin \left( {{{5\pi } \over 8}} \right)\sin \left( {{{6\pi } \over 8}} \right)\sin \left( {{{7\pi } \over 8}} \right)$$ का है :
$$2\sin \left( {{\pi \over 8}} \right)\sin \left( {{{2\pi } \over 8}} \right)\sin \left( {{{3\pi } \over 8}} \right)\sin \left( {{{5\pi } \over 8}} \right)\sin \left( {{{6\pi } \over 8}} \right)\sin \left( {{{7\pi } \over 8}} \right)$$ का है :
$${1 \over {4\sqrt 2 }}$$
$${1 \over 4}$$
$${1 \over 8}$$
$${1 \over {8\sqrt 2 }}$$
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