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The value of cos{pi + tan^-1(-1/2)} is...

The value of `cos{pi + tan^-1(-1/2)}` is

A

`1/2`

B

`-1/2`

C

`(-sqrt3)/2`

D

`sqrt3/2`

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MODERN PUBLICATION-INVERSE-TRIGONOMETRIC FUNCTIONS-EXERCISE
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  3. The value of cos{pi + tan^-1(-1/2)} is

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  6. The value of sin^-1((2sqrt2)/3) + sin^-1(1/3) is equal to

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  7. Solve for x : "tan"^(-1)(1-x)/(1+x)=1/(2)"tan"^(-1)x,xgt0.

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  8. The value of sin^-1((2sqrt2)/3) + sin^-1(1/3) is equal to

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  9. If cos^(-1) ((1-a^(2))/(1+a^(2)))- cos^(-1) ((1-b^(2))/(1+b^(2))) = 2 ...

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  10. cos^-1(cos((7pi)/5) equals.

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  12. If sin^-1(x/13) + cosec^-1(13/12) = pi/2 then the value of x is

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  13. Given 0 le x le 1/2, then the value of : tan[sin^-1(x/sqrt2 + (sqrt(1-...

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  15. The value of tan^-1(sqrt3/2) + tan^-1(1/sqrt3) is equal to

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  16. The value of cos(sin^-1(2/3)) is equal to

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  17. If tan^-1 2x + tan^-1 3x = pi/2, then the value of x is equal to

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  18. If sin^-1x + sin^-1 y + sin^-1z = (3pi)/2, then the value of x^9 + y^9...

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