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The principal value of cos ^(-1) ""...

The principal value of ` cos ^(-1) ""(-(1)/(2) ) ` is

A

`(pi)/(3) `

B

`(2pi)/(3)`

C

`(pi)/(4) `

D

`(pi)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • The principal value of cos^(-1)("cos"(11pi)/(6)) is -

    A
    `(11pi)/(6)`
    B
    `(pi)/(6)`
    C
    `(5pi)/(6)`
    D
    `-(5pi)/(6)`

  • The principal value of cot ^(-1) ((1)/(sqrt(3))) is -

    A
    `(pi)/(6)`
    B
    `(pi)/(4)`
    C
    `(pi)/(3)`
    D
    `(pi)/(2)`

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