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

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

A

`pi/6`

B

`pi/3`

C

`(2pi)/3`

D

`(5pi)/6`

Text Solution

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The correct Answer is:
C
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AAKASH INSTITUTE-INVERSE TRIGONOMETRIC FUNCTIONS-ASSIGNMENT (SECTION - A)(OBJECTIVE TYPE QUESTIONS (ONE OPTION IS CORRECT))
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  2. The principal value of cos^(-1)(-1/2) is

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  3. Find the principal value of cot^(-1)(-sqrt3)

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  4. Find the principal value of tan^(-1)(-1/sqrt3).

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  5. The principal value of cosec^(-1)(-1) is

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  6. The principal value of cot^(-1)x lie in

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  7. The principal values of sec^(-1)x lie in

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  8. The value of tan^(-1)(sqrt3)+cos^(-1)((-1)/sqrt2)+sec^(-1)((-2)/sqrt3)...

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  9. The value of cot^(-1)(-sqrt3)+cosec^(-1)(2)+tan^(-1)(sqrt3) is

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  10. The value of 2cos^(-1)(-1/2)-2 sin^(-1)(-1/2)-cos^(-1)(-1) is

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  11. sin^(-1)(sin((7pi)/6)) is

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  13. sin(cos^(-1)(3/5)) is equal to

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  14. The numerical value of "tan"(2tan^(-1)(1/5)-pi/4 is equal to

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  15. The value of tan[1/2cos^(-1).sqrt5/3] is

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  16. If sin^(-1)x+sin^(-1)y+sin^(-1)z=(3pi)/2, Then x^2013+y^2013+z^2013-9/...

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  17. sin^(- 1)(4/5)+2tan^(- 1)(1/3)=

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  18. 1/2tan^(- 1)(12/5) is equal to

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  19. Value of sec^(-1)(sec.(4pi)/3) is

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  20. Find the value of expression: sin(2tan^(-1)1/3)+cos(tan^(-1)2sqrt(2))

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