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Inverse Trigonometric Functions 3 Mark Book Back Question Paper With Answer Key

12th Standard

    Reg.No. :
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Maths

Time : 00:30:00 Hrs
Total Marks : 108

     3 Marks 

    36 x 3 = 108
  1. Find the domain of sin−1(2−3x2)

  2. Find all the values of x such that -10\(\pi\)\(\le x\le\)10\(\pi\) and sin x = 0 

  3. Find the domain of the following
     \(f\left( x \right) { =sin }^{ -1 }\left( \frac { { x }^{ 2 }+1 }{ 2x } \right) \)

  4. Find the value of sin-1\(\left( sin\frac { 5\pi }{ 9 } cos\frac { \pi }{ 9 } +cos\frac { 5\pi }{ 9 } sin\frac { \pi }{ 9 } \right) \).

  5. Find the domain of cos-1\((\frac{2+sinx}{3})\)

  6. Find the value of
     \(cos\left( { cos }^{ -1 }\left( \frac { 4 }{ 5 } \right) +{ sin }^{ -1 }\left( \frac { 4 }{ 5 } \right) \right) \)

  7. Find tan(tan-1(2019))

  8. Prove that tan (sin-1x) = \(\frac{x}{\sqrt{1-x^{2}}} \), 1< x < 1

  9. Find the value of
    \(tan\left( { cos }^{ -1 }\left( \frac { 1 }{ 2 } \right) -{ sin }^{ -1 }\left( -\frac { 1 }{ 2 } \right) \right) \)

  10. Show that cot−1\(\left( \frac { 1 }{ \sqrt { { x }^{ 2 }-1 } } \right) ={ sec }^{ -1 }x,|x|>1\)

  11. Simplify \({ cos }^{ -1 }\left( cos\left( \frac { 13\pi }{ 3 } \right) \right) \)

  12. Evaluate \(sin\left[ { sin }^{ -1 }\left( \frac { 3 }{ 5 } \right) +{ sec }^{ -1 }\left( \frac { 5 }{ 4 } \right) \right] \)

  13. If cos−1 x + cos−1 y + cos−1  z = \(\pi \) and 0 < x, y, z < 1, show that x2 + y+ z+ 2xyz = 1 

  14. Solve \(cos\left( sin^{ -1 }\left( \frac { x }{ \sqrt { 1+{ x }^{ 2 } } } \right) \right) =sin\left\{ cot^{ -1 }\left( \frac { 3 }{ 4 } \right) \right\} \)

  15. Find the value of the expression in terms of x, with the help of a reference triangle.
     sin(cos−1(1-x))

  16. Find the value of
    \({ sin }^{ -1 }\left( cos\left( { sin }^{ -1 }\left( \frac { \sqrt { 3 } }{ 2 } \right) \right) \right) \)

  17. Prove that 
    \({ tan }^{ -1 }(\frac { 2 }{ 11 }) +{ tan }^{ -1 }(\frac { 7 }{ 24 }) ={ tan }^{ -1 }(\frac { 1 }{ 2 } )\)

  18. Solve \({ sin }^{ -1 }\frac { 5 }{ x } +{ sin }^{ -1 }\frac { 12 }{ x } =\frac { \pi }{ 2 } \)

  19. Find the domain of the following
    g(x) = 2sin−1(2x−1)−\(\frac{\pi}{4}\)

  20. Find the value of \({ cos }^{ -1 }\left( cos\left( \frac { 4\pi }{ 3 } \right) \right) +{ cos }^{ -1 }\left( cos\left( \frac { 5\pi }{ 4 } \right) \right) \)

  21. Find the value of
    \(sin\left( { tan }^{ -1 }\left( \frac { 1 }{ 2 } \right) -{ cos }^{ -1 }\left( \frac { 4 }{ 5 } \right) \right) \)

  22. Find the value of
    \(cos\left( { sin }^{ -1 }\left( \frac { 4 }{ 5 } \right) -{ tan }^{ -1 }\left( \frac { 3 }{ 4 } \right) \right) \)

  23. Find the value of the expression in terms of x, with the help of a reference triangle.
    cos (tan-1(3x-1))

  24. Find the value of the expression in terms of x, with the help of a reference triangle.
    tan\(\left( { sin }^{ -1 }\left( x+\frac { 1 }{ 2 } \right) \right) \)

  25. Find the value of
    \(cot\left( { sin }^{ -1 }\frac { 3 }{ 5 } +{ sin }^{ -1 }\frac { 4 }{ 5 } \right) \)

  26. Find the value of
    \(tan\left( { sin }^{ -1 }\frac { 3 }{ 5 } +{ cot }^{ -1 }\frac { 3 }{ 2 } \right) \)

  27. Prove that 
    \({ sin }^{ -1 }(\frac { 3 }{ 5 } )-{ cos }^{ -1 (}\frac { 12 }{ 13 } )={ sin }^{ -1 }(\frac { 16 }{ 65 }) \)

  28. Solve  \(2{ tan }^{ -1 }x={ cos }^{ -1 }\frac { 1-{ a }^{ 2 } }{ 1+{ a }^{ 2 } } -{ cos }^{ -1 }\frac { 1-{ b }^{ 2 } }{ 1+{ b }^{ 2 } } ,a>0,b>0\)

  29. Solve \(2{ tan }^{ -1 }(cosx)={ tan }^{ -1 }(2cosec\ x)\)

  30. Solve \({ cot }^{ -1 }x-{ cot }^{ -1 }\left( x+2 \right) =\frac { \pi }{ 12 } ,x>0\)

  31. Simplify \({ tan }^{ -1 }\left( tan\left( \frac { 3\pi }{ 4 } \right) \right) \)

  32. Simplify \({ sec }^{ -1 }\left( sec\left( \frac { 5\pi }{ 3 } \right) \right) \)

  33. Simplify sin-1[sin10]

  34. Find all the values of x such that
    \(-3 \pi \leq x \leq 3 \pi \text { and } \sin x=-1\)

  35. Find tan−1(\(-\sqrt3\))

  36. Find tan−1\((tan\frac{3\pi}{5})\)

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