(A) The given expression is $\cos 1^{\circ} \cdot \cos 2^{\circ} \cdot \cos 3^{\circ} \dots \cos 90^{\circ} \dots \cos 179^{\circ}$.Since $\cos 90^{\c

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(A) The given expression is $\cos 1^{\circ} \cdot \cos 2^{\circ} \cdot \cos 3^{\circ} \dots \cos 90^{\circ} \dots \cos 179^{\circ}$.Since $\cos 90^{\circ} = 0$,the entire product becomes $0$ because any number multiplied by $0$ is $0$.Therefore,$\cos 1^{\circ} \cdot \cos 2^{\circ} \cdot \cos 3^{\circ} \dots \cos 179^{\circ} = 0$.

Class 11 Mathematics Trigonometrical Ratios, Functions and Identities Fundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles

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$\cos 1^{\circ} \cdot \cos 2^{\circ} \cdot \cos 3^{\circ} \dots \cos 179^{\circ} = $

MHT CET 2018 All MHT CET

A
$0$
B
$1$
C
$-\frac{1}{2}$
D
$-1$

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Class 11

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Trigonometrical Ratios, Functions and Identities

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Fundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles

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$\cos 1^{\circ} \cdot \cos 2^{\circ} \cdot \cos 3^{\circ} \dots \cos 179^{\circ} = $

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