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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Trigonometric-functions/REBOL/trigonometric-functions.rebol Normal file
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REBOL [
Title: "Trigonometric Functions"
URL: http://rosettacode.org/wiki/Trigonometric_Functions
]
radians: pi / 4 degrees: 45.0
; Unlike most languages, REBOL's trig functions work in degrees unless
; you specify differently.
print [sine/radians radians sine degrees]
print [cosine/radians radians cosine degrees]
print [tangent/radians radians tangent degrees]
d2r: func [
"Convert degrees to radians."
d [number!] "Degrees"
][d * pi / 180]
arcsin: arcsine sine degrees
print [d2r arcsin arcsin]
arccos: arccosine cosine degrees
print [d2r arccos arccos]
arctan: arctangent tangent degrees
print [d2r arctan arctan]