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c = a number in the range -1 to +1.
It is considered to be the cosine of an angle. |
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ACos( c ) is an angle which has cosine = c.
It is in the range 0 to +180 degrees. |
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; ACos example
; NaN means "Not a Number", the numerical result is invalid. Const width = 640, height = 480 Graphics width, height Local C#, AC# ; Cos and ACos Print " C ACos( C )" Print "==================" For n = -11 To 11 C = n / 10.0 AC = ACos( C ) Print RSet(C, 6) + RSet( AC, 10) Next WaitKey() : End |