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If sin^-1(x/5) + cosec^-1(5/4)= pi/2, th...

If `sin^-1(x/5) + cosec^-1(5/4)= pi/2`, then a value of x is

A

3

B

4

C

5

D

1

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MODERN PUBLICATION-INVERSE-TRIGONOMETRIC FUNCTIONS-EXERCISE
  1. The number of real solutions of the equations: tan^-1 sqrt(x(x+1)) + s...

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  2. If cos^-1 x - cos^-1 y/2 = alpha, then 4x^2 - 4xy cos alpha + y^2 is e...

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  3. If sin^-1(x/5) + cosec^-1(5/4)= pi/2, then a value of x is

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  4. The value of cot(cosec^-1(5/3) + tan^-1(2/3) is

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  5. If 0 < x < 1, then : sqrt(1+x^1)[{ x cos(cot^-1x) + sin (cot^-1 x}^2 -...

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  6. If tan^(-1) y = tan^(-1) x + tan^(-1)((2x)/(1 -x^(2)))", where" |x| lt...

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  7. Find the value of sin^-1(sin(4pi)/5)

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  8. show that: 2 sin^-1(3/5) = tan^-1(24/7)

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  9. Write the value of tan^(-1)[2sin(2cos^(-1)""sqrt(3)/2)].

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  10. show that tan^-1(1/2) + tan^-1(1/5) + tan^-1(1/8) = pi/4

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  11. If tan^-1((x-2)/(x-4)) + tan^-1((x+2)/(x+4)) = pi/4 find the value of ...

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  12. Prove that : tan^-1((cosx)/(1+sinx)) = pi/4 - x/2, x in (-pi/2,pi/2)

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  13. Show that 2sin^-1(3/5)-tan^-1(17/31) = pi/4

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  14. Prove that : tan^-1 x +tan^-1 2x/(1-x^2) = tan^-1 ((3x-x^3)/(1-3x^2)),...

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  15. If tan^-1 x + tan^-1y - tan^-1z = 0, then prove that x + y + xyz = z.

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  16. Let f(x) = sin (pi/6 sin (pi/2 sinx)) for all x inR and g(x) = pi/2 si...

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  17. If alpha = 3 sin^(-1) (6/11) " and "beta = 3 cos^(-1) (4/9) , where ...

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  18. Let f:(-1,1)vecR be such that f(cos4theta)=2/(2-sec^2theta) for theta ...

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  19. Let f(-pi/2,pi/2) rarr R be given by (log(sec x + tan x))^3. Then

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  20. A function f: Z rarrrZ is defined as below f(x) = {:{(x+3, if x is od...

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