The value of cot 10 deg cot 20 deg cot 60 deg cot 70 deg cot 80 deg is ........

Quantitative Aptitude ( CCS) Trignometry

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The value of cot 10° . cot 20° . cot 60° . cot 70° . cot 80° is

-1

√3

1 /√3

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Explanation:

cot 10° . cot 80° . cot 20° . cot 70° . cot 60°
= cot 10° . tan 10° . cot 20° . tan 20° . cot 60°
[? cot (90° – Θ) = tan Θ & cot Θ . tan Θ = 1]
= 1 x 1 x 1/√3 [ cot 60° = 1/√3]
= 1/√3

By: Amit Kumar

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The value of cot 10 deg cot 20 deg cot 60 deg cot 70 deg cot 80 deg is ........

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Explanation:

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