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The value of cos (1/2 cos^(-1) . 1/8) is...

The value of `cos (1/2 cos^(-1) . 1/8)` is equal to

A

`3//4`

B

`-3//4`

C

`1//16`

D

`1//4`

Text Solution

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The correct Answer is:
A
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ARIHANT MATHS-INVERSE TRIGONOMETRIC FUNCTIONS-Exercise (Single Option Correct Type Questions)
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  3. solve sin^(-1) (sin 5) gt x^(2) - 4x

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  5. Find the smallest and the largest values of tan^(-1) ((1 - x)/(1 + x))...

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  6. Sum of infinite terms of the series cot^(-1) ( 1^(2) + 3/4) + cot^(-1...

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  7. Solution of equation cot^(-1) x + sin^(-1) . 1/sqrt5 = pi/4 is

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  8. Solution set of the inequality ( cot^(-1) x)^(2) - ( 5 cot^(-1) x) +...

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  9. Find the sum to infinite terms of the series tan^(-1)((1)/(3))+tan^(-1...

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  10. If x + 1/x = 2, the principal value of sin^(-1) x is

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  11. If x in ( - pi/2, pi/2), then the value of tan^(-1) ((tan x)/4) + ta...

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  12. If sin^(-1) x + sin^(-1) y = (2pi)/3", then " cos^(-1) x + cos^(-1) y

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  13. The value of cot (pi)/(4)-2 cot^-1(3) is

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  14. sin [ tan^(-1). (1 - x^(2))/(2x) + cos^(-1) . (1-x^(2))/(1 + x^(2))] i...

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

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  16. If |cos^(-1) ((1 -x^(2))/(1 + x^(2)))| lt (pi)/(3), then

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  17. The value of cos^-1[cot(sin^-1(sqrt((2-sqrt3)/4))+cos^-1(sqrt12/4)+sec...

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  18. If tan^(-)(x)/(pi)lt (pi)/(3) x in N then the maximum vlaue of x is

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  19. If tan^(-1). (sqrt((1+x^(2))) - sqrt((1-x^(2))))/(sqrt((1+x^(2)))+sqrt...

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  20. Find the number of positive integral solutions of tan^-1 x + cot^-1 y ...

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