#### 10.5.2.1 Trigonometric and Hyperbolic Functions

Function: acos (x)

  – Arc Cosine.

  Categories:Trigonometric functions ·

Function: acosh (x)

  – Hyperbolic Arc Cosine.

  Categories:Hyperbolic functions ·

Function: acot (x)

  – Arc Cotangent.

  Categories:Trigonometric functions ·

Function: acoth (x)

  – Hyperbolic Arc Cotangent.

  Categories:Hyperbolic functions ·

Function: acsc (x)

  – Arc Cosecant.

  Categories:Trigonometric functions ·

Function: acsch (x)

  – Hyperbolic Arc Cosecant.

  Categories:Hyperbolic functions ·

Function: asec (x)

  – Arc Secant.

  Categories:Trigonometric functions ·

Function: asech (x)

  – Hyperbolic Arc Secant.

  Categories:Hyperbolic functions ·

Function: asin (x)

  – Arc Sine.

  Categories:Trigonometric functions ·

Function: asinh (x)

  – Hyperbolic Arc Sine.

  Categories:Hyperbolic functions ·

Function: atan (x)

  – Arc Tangent.

  See also `atan2`.

  Categories:Trigonometric functions ·

Function: atan2 (y, x)

  – yields the value of \(\tan^{-1}(y/x)\) in the interval \(-\pi\) to \(\pi\) taking into consideration the quadrant of the point \((x,y).\)

  See also `atan`.

  Categories:Trigonometric functions ·

Function: atanh (x)

  – Hyperbolic Arc Tangent.

  Categories:Hyperbolic functions ·

Function: cos (x)

  – Cosine.

  Categories:Trigonometric functions ·

Function: cosh (x)

  – Hyperbolic Cosine.

  Categories:Hyperbolic functions ·

Function: cot (x)

  – Cotangent.

  Categories:Trigonometric functions ·

Function: coth (x)

  – Hyperbolic Cotangent.

  Categories:Hyperbolic functions ·

Function: csc (x)

  – Cosecant.

  Categories:Trigonometric functions ·

Function: csch (x)

  – Hyperbolic Cosecant.

  Categories:Hyperbolic functions ·

Function: sec (x)

  – Secant.

  Categories:Trigonometric functions ·

Function: sech (x)

  – Hyperbolic Secant.

  Categories:Hyperbolic functions ·

Function: sin (x)

  – Sine.

  Categories:Trigonometric functions ·

Function: sinh (x)

  – Hyperbolic Sine.

  Categories:Hyperbolic functions ·

Function: tan (x)

  – Tangent.

  Categories:Trigonometric functions ·

Function: tanh (x)

  – Hyperbolic Tangent.

  Categories:Hyperbolic functions ·