Group: | Mathematical Functions |
Topic: | Trigonometric Functions |
See also: | acos acosh asin asinh atan atan2 atanh cosh sin sinh tan tanh |
Function: | cos | |
Description: | Returns the cosine in radian of the elements of an array. |
Usage: | z = cos (x) | |
Input: | ||
x | array | |
Output: | ||
z | array |
x = #(pi/2, pi/4)~#(pi, 3/4*pi) cos(x) setenv("outputformat","%8.5f") cos(x) setenv("outputformat","%8.5lg")
Content of cos [1,] 6.1232e-17 -1 [2,] 0.70711 -0.70711 Content of cos [1,] 0.00000 -1.00000 [2,] 0.70711 -0.70711