ACS Arc CoSine
Function
ACS calculates the value of an angle from its cosine.
How to use ACS
ACS is followed by a numeric value. An expression must be enclosed in brackets, for example
60 LET x=ACS (y*z)
The value following ACS (y*z above) is the cosine of the required angle and may range from -1 to 1. ACS the returns the value of the angle in radians. To convert radians to degrees, multiply the value returned by ACS by 180/PI.
Example
The command
PRINT 180/PI * ACS 0.5
displays 60, the angle in degrees that has a cosine of 0.5.
Format
- ACS num-const
- ACS num-var
- ACS (num-expr)
See also