how do you use sin in matlab?

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Dwyane Wade
Dwyane Wade il 14 Ago 2011
like for example I will input sin 30
when I do this I get an error: ??? Undefined function or variable 'sin30'.
sin is a function right? I do not need to put a value for it but why do I still get this error.? help me guys please...

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Yoav Livneh
Yoav Livneh il 14 Ago 2011
Use sin(30).

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Daniel Shub
Daniel Shub il 14 Ago 2011
You need parentheses. For example:
sin(30)
Although you probably want
sin(30*pi/180)
since sin expects its argument to be in radians.
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John D'Errico
John D'Errico il 14 Ago 2011
MATLAB has sind for those who insist on degrees.

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