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The value of cos36° cos42° cos78° is

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in Mathematics by (64.1k points)

The value of cos36° cos42° cos78° is

(a) 1/4

(b) 1/8

(c) 1/16

(d) [(√5 – 1)/4]2

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1 Answer

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Best answer

Correct option (b) 1/8

Explanation:

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