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ACOS

 

Syntax: @ACOS(X)

X = a numeric value between -1 and 1.

@ACOS returns the arc cosine of angle X. The result is the angle (in radians) whose cosine is X and ranges from 0 to tex2html_wrap_inline15907 . To convert the result from radians to degrees, use the @DEGREES function.

Examples:

@ACOS(1) = 0

@ACOS(R3) = 1.670963748, where R3 = -0.1

@DEGREES(@ACOS(0)) = 90

@ACOS(-20) = Error - @ACOS, domain is -1 <= x <= 1


next up previous contents index
Next: ACOSH Up: A Function Reference Previous: ACCRINTM

NExS User's Guide, Version 1.4.5
Grey Trout Software
11 April 1999