10.13 cos() and cosh()

Prototypes		Header File(s)
`template <class T>`
`RWMathVec<T>`	`cos(const RWMathVec<T>&)`	`<rw/math/mathvec.h>`
`RWMathVec<T>`	`cosh(const RWMathVec<T>&)`	`<rw/math/mathvec.h>`
`RWGenMat<T>`	`cos(const RWGenMat<T>&)`	`<rw/math/genmat.h>`
`RWGenMat<T>`	`cosh(const RWGenMat<T>&)`	`<rw/math/genmat.h>`
`RWMathArray<T>`	`cos(const RWMathArray<T>&)`	`<rw/math/mtharray.h>`
`RWMathArray<T>`	`cosh(const RWMathArray<T>&)`	`<rw/math/mtharray.h>`

10.13.1 Description

The function cos() takes x as an argument and returns y such that y_i = cos(x_i). The x_i are in radians. For complex arguments, the complex cosine is returned.

The function cosh() takes x as an argument and returns hyperbolic cosines y such that y_i = cosh(x_i). For complex arguments, the complex hyperbolic cosine is returned.