Return inverse cosine.
Source position: math.pp line 427
function ArcCos( |
x: Single |
):Single; |
x: Double |
):Double; |
x: Extended |
):Extended; |
Arccos returns the inverse cosine of its argument x. The argument x should lie between -1 and 1 (borders included).
If the argument x is not in the allowed range, an EInvalidArgument exception is raised.
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Return inverse sine. |
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Return inverse hyperbolic cosine. |
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Return inverse hyperbolic sine. |
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Return inverse hyperbolic tangent. |
Program Example1; { Program to demonstrate the arccos function. } Uses math; Procedure WriteRadDeg(X : float); begin Writeln(X:8:5,' rad = ',radtodeg(x):8:5,' degrees.') end; begin WriteRadDeg (arccos(1)); WriteRadDeg (arccos(sqrt(3)/2)); WriteRadDeg (arccos(sqrt(2)/2)); WriteRadDeg (arccos(1/2)); WriteRadDeg (arccos(0)); WriteRadDeg (arccos(-1)); end.