Trigonometric functions: Difference between revisions
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arccos(0.7) =>
arctan(0.7) =></lang>
=={{header|PostScript}}==
<lang postscript>
90 sin =
60 cos =
%tan of 45 degrees
45 sin 45 cos div =
%inverse tan ( arc tan of sqrt 3)
3 sqrt 1 atan
</lang>
=={{header|PowerShell}}==
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