Math 2.0

Special functions Definition

Inverse trigonometric functions

Builds on ArcsineArccosineArctangent

Definition

The inverse trigonometric functions are the inverses of the restrictions of the trigonometric functions. The restrictions are to the following intervals: sin⁡\sin on [−π/2,π/2][-\pi/2, \pi/2], cos⁡\cos on [0,π][0, \pi], and tan⁡\tan on (−π/2,π/2)(-\pi/2, \pi/2). They are the arcsine arcsin⁡ ⁣:[−1,1]→[−π/2,π/2]\arcsin \colon [-1, 1] \to [-\pi/2, \pi/2], the arccosine arccos⁡ ⁣:[−1,1]→[0,π]\arccos \colon [-1, 1] \to [0, \pi] and the arctangent arctan⁡ ⁣:ℝ→(−π/2,π/2)\arctan \colon \mathbb{R} \to (-\pi/2, \pi/2).

Remarks

The trigonometric functions are not injective on ℝ\mathbb{R}. The restrictions to these intervals are strictly monotone and continuous, so they have continuous inverses. The values are the principal values. Other notations are sin⁡−1\sin^{-1}, cos⁡−1\cos^{-1} and tan⁡−1\tan^{-1}. Similar definitions give arccot⁡\operatorname{arccot}, arcsec⁡\operatorname{arcsec} and arccsc⁡\operatorname{arccsc}.

Reading path

To understand this page from the ground up, read these 65 pages in order. The foundations come first.

  1. Limit point of a set definition
  2. Local maximum definition
  3. Sequence definition
  4. Strictly monotone function definition
  5. Limit of a function definition
  6. Local minimum definition
  7. Real sequence definition
  8. Subsequence definition
  9. Continuity at a point definition
  10. Derivative definition
  11. One-sided limit definition
  12. Bounded sequence definition
  13. Cauchy sequence definition
  14. Geometric sequence definition
  15. Limit of a sequence definition
  16. Monotone sequence definition
  17. Series definition
  18. Continuous function definition
  19. Fermat's theorem on stationary points statement
  20. Limit superior definition
  21. Cauchy sequences are bounded statement
  22. Every sequence has a monotone subsequence statement
  23. Sum of a finite geometric series statement
  24. Monotone convergence theorem for sequences statement
  25. Convergent sequence definition
  26. Pointwise convergence definition
  27. Squeeze theorem statement
  28. Partial sum definition
  29. Power series definition
  30. Intermediate value theorem statement
  31. One-sided limits of a monotone function exist statement
  32. Bolzano–Weierstrass theorem statement
  33. The sequence r^n tends to zero for |r| < 1 example
  34. Radius of convergence definition
  35. Uniform convergence definition
  36. Convergent series definition
  37. Sine and cosine definition
  38. Boundedness theorem statement
  39. Continuity of the inverse of a strictly monotone continuous function statement
  40. Cauchy criterion for sequences statement
  41. Uniform convergence on a set definition
  42. Absolute convergence definition
  43. Series of functions definition
  44. Tangent function definition
  45. A series of nonnegative terms converges iff its partial sums are bounded statement
  46. Sum of a series definition
  47. Extreme value theorem statement
  48. Uniformly Cauchy sequence of functions definition
  49. Arctangent definition
  50. Geometric series example
  51. Comparison test statement
  52. Rolle's theorem statement
  53. Root test statement
  54. Weierstrass M-test statement
  55. Mean value theorem statement
  56. Cauchy–Hadamard theorem statement
  57. Power series converge uniformly on smaller discs inside the radius of convergence statement
  58. Uniform convergence of derivatives allows term-by-term differentiation statement
  59. Term-by-term differentiation statement
  60. Power series are differentiable inside the radius of convergence statement
  61. Derivative of cosine statement
  62. pi object
  63. Arccosine definition
  64. Arcsine definition
  65. Inverse trigonometric functions definition

Further reading

  1. Web https://en.wikipedia.org/wiki/Inverse_trigonometric_functions, Principal values
About this page
Tag02HTDK1FBD
URIm2://02HTDK1FBD
Kinddefinition
WritingW1 stated
MSC33B10
DefinesInverse trigonometric functions
UsesArcsine, Arccosine, Arctangent

Markdown · JSON · Edit on GitHub

What this page needs for W2

  • edge instance_of in: one example (0 of 1)
  • edge not_instance_of in: one non-example that fails one clause (0 of 1)

The writing levels say how complete the text of a page is. They do not measure its truth.

What links here

No page links to this page yet.