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cos{cos^(-1)(-1/7)+sin^(-1)(-1/7)} =...

`cos{cos^(-1)(-1/7)+sin^(-1)(-1/7)}` =

A

`-1/3`

B

None of These

C

`1/3`

D

`4/9`

Text Solution

Verified by Experts

The correct Answer is:
B
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OBJECTIVE RD SHARMA-INVERSE TRIGONOMETRIC FUNCTIONS -Chapter Test
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