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Question

The minimum value of cos(cos x) is


A

0

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B

-cos1

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C

cos1

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D

-1

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Solution

The correct option is C

cos1


Cos x varies from -1 to 1 for all real x. Thus cos(cos x) varies from cos1 to cos 0

Minimum value of Cos(Cos x) is Cos 1


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