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d/dx cos^-1 sqrtcos x is equal to...

`d/dx cos^-1 sqrtcos x` is equal to

A

`1/2 sqrt(1+secx)`

B

`sqrt(1+secx)`

C

`-1/2 sqrt(1+secx)`

D

`-sqrt(1+secx)`

Text Solution

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The correct Answer is:
A
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