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Trigonometric Ratio and Identites question

2023 · 8 Apr · Shift 2 · Q33

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JEE Main
Mathematics
Trigonometric Ratio and Identites
2023 · 8 Apr · Shift 2 · Q33

Trigonometric Ratio and Identites question

2023 · 8 Apr · Shift 2 · Q33

JEE MainMathematicsTrigonometric Ratio and IdentitesMCQ+4 / −1

The value of

36\left(4 \cos ^{2} 9^{\circ}-1\right)\left(4 \cos ^{2} 27^{\circ}-1\right)\left(4 \cos ^{2} 81^{\circ}-1\right)\left(4 \cos ^{2} 243^{\circ}-1\right)

is :

A
18
B
36
C
54
D
27

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