Contents of Example

Example

> cos(0)
        1
> cos(pi/2)
 6.12e-17
> cos(pi)
       -1
> cos(pi/4)
    0.707
> cos(1+1j)
    0.834 - 0.989i
> a = rand(2,5)*pi
 a =
     3.14       2.03      0.116       2.09      0.641  
     3.06       1.05      0.508      0.266      0.526  
> cos(a)
       -1     -0.447      0.993     -0.494      0.801  
   -0.997      0.501      0.874      0.965      0.865

See also: Page $[*]$ acos(), Page $[*]$ cosh(), Page $[*]$ sin(), Page $[*]$ tan().