RosettaCodeData/Task/Trigonometric-functions/BASIC/trigonometric-functions.basic

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pi = 3.141592653589793#
radians = pi / 4 'a.k.a. 45 degrees
degrees = 45 * pi / 180 'convert 45 degrees to radians once
PRINT SIN(radians) + " " + SIN(degrees) 'sine
PRINT COS(radians) + " " + COS(degrees) 'cosine
PRINT TAN(radians) + " " + TAN (degrees) 'tangent
'arcsin
thesin = SIN(radians)
arcsin = ATN(thesin / SQR(1 - thesin ^ 2))
PRINT arcsin + " " + arcsin * 180 / pi
'arccos
thecos = COS(radians)
arccos = 2 * ATN(SQR(1 - thecos ^ 2) / (1 + thecos))
PRINT arccos + " " + arccos * 180 / pi
PRINT ATN(TAN(radians)) + " " + ATN(TAN(radians)) * 180 / pi 'arctan