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If cos^(-1)x + cos^(-1) (2//3) = pi//2, ...

If `cos^(-1)x + cos^(-1) (2//3) = pi//2`, the value of x is

A

`1//3`

B

`sqrt(5)//3`

C

`sqrt(5)//2`

D

`1//2`

Text Solution

Verified by Experts

The correct Answer is:
B
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