radArcCos

Help Contents Arithmetic Trigonometric Functions radArcCos
ArcCos ArcTan

radArcCos x

outputs the arcus cosine of its input. The result is in radians. See ArcCos!

Examples: 

radArcCos 1		;0  ;-)
pi/radArcCos (Sqrt 3)/2		;6  ;-)
pi/radArcCos 1/Sqrt 2		;4  ;-)
pi/radArcCos 1/2		;3  ;-)
pi/radArcCos 0		;2  ;-)
pi/radArcCos -1		;1  ;-)
as=radArcCos (list (Sqrt 3)/2 1/Sqrt 2 1/2 0)
(rseq pi pi 4)/as		;[6 4 3 2] ;-)

Examples:

References:

ArcCos ArcTan