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Let cos^(-1)(4x^(3)-3x)=a+b cos^(-1)x ...

Let `cos^(-1)(4x^(3)-3x)=a+b cos^(-1)x`
Q. If `x in [-(1)/(2), (1)/(2)]`, then `sin^(-1)("sin"(a)/(b))` is :

A

`-(pi)/(3)`

B

`(pi)/(3)`

C

`-(pi)/(6)`

D

`(pi)/(6)`

Text Solution

Verified by Experts

The correct Answer is:
A
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Knowledge Check

  • Let cos^(-1) (4x^(3) -3x) = a + b cos^(-1) x If x in [-1, -(1)/(2)) , then the value of a + b pi is

    A
    `2pi`
    B
    `3pi`
    C
    `pi`
    D
    `-2pi`
  • Let cos^(-1) (4x^(3) -3x) = a + b cos^(-1) x If x in ((1)/(2), 1] , then the value of lim_( y to a)b cos (y) is

    A
    `-1//3`
    B
    `-3`
    C
    `(1)/(3)`
    D
    3
  • If sin^(-1) x + sin^(-1) y = (2pi)/3", then " cos^(-1) x + cos^(-1) y

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