Group: | Mathematical Functions |
Topic: | Trigonometric Functions |
See also: | acosh asin asinh atan atan2 atanh cos cosh sin sinh tan tanh |
Function: | acos | |
Description: | Returns the arccosine of the elements of an array. |
Usage: | z = acos (x) | |
Input: | ||
x | array | |
Output: | ||
z | array |
x = #(0, 1/sqrt(2))~#(-1, cos(4))~#(1.1,-1.1) acos(x)
Content of acos [1,] 1.5708 3.1416 +NAN [2,] 0.7854 2.2832 +NAN