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Trigonometric functions: Difference between revisions
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0.7853981633974483 45.0
0.7853981633974483 45.0
=={{header|Erlang}}==
{{trans|C}}
<lang erlang>
Deg=45.
Rad=math:pi()/4.
math:sin(Deg * math:pi() / 180)==math:sin(Rad).
</lang>
Output:
true
<lang erlang>
math:cos(Deg * math:pi() / 180)==math:cos(Rad).
</lang>
Output:
true
<lang erlang>
math:tan(Deg * math:pi() / 180)==math:tan(Rad).
</lang>
Output:
true
<lang erlang>
Temp = math:acos(math:cos(Rad)).
Temp * 180 / math:pi()==Deg.
</lang>
Output:
true
<lang erlang>
Temp = math:atan(math:tan(Rad)).
Temp * 180 / math:pi()==Deg.
</lang>
Output:
true
=={{header|Fantom}}==
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