] (that is, 0 < ACOS(a) < ). The ACOS function calculates the arc cosine of an expression
a. Expression a must evaluate to a value whose absolute value is less
than or equal to 1. The value returned by ACOS lies in the range [0,] (that is, 0 < ACOS(a) < ).
Format
ACOS(a)
Arguments
| a |
Any valid function expression. Number of Arguments: 1 |
Examples
ACOS((DX(21,11)*DX(31,41)+DY(21,11)*DY(31,41)
+ DZ(21,11)*DZ(31,41))/(DM(21,11)*DM(31,41))
This function calculates the angle between the line from Markers 11 and 21 and the line from Markers 41 and 31. The result is in radians.