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cos ^(-1) [ cos ((7pi)/(5))] is equal t...

`cos ^(-1) [ cos ((7pi)/(5))] ` is equal to

A

`(3pi)/(5)`

B

`(2pi)/(5)`

C

`(-7pi)/(5)`

D

`(7pi)/(5)`

Text Solution

Verified by Experts

The correct Answer is:
A
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