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