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Trigonometric Ratio and Identites question

2019 · 10 Jan · Shift 2 · Q38

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JEE Main
Mathematics
Trigonometric Ratio and Identites
2019 · 10 Jan · Shift 2 · Q38

Trigonometric Ratio and Identites question

2019 · 10 Jan · Shift 2 · Q38

JEE MainMathematicsTrigonometric Ratio and IdentitesMCQ+4 / −1

The value of

\cos {\pi \over {{2^2}}}.\cos {\pi \over {{2^3}}}\,.....\cos {\pi \over {{2^{10}}}}.\sin {\pi \over {{2^{10}}}}

is -

A
${1 \over {256}}$
B
${1 \over {2}}$
C
${1 \over {1024}}$
D
${1 \over {512}}$

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