## Operators

Unlike variables, which are usually printed in italic font, for operators the normal font is used. Each operator has its own command and the supported operators are listed below.

Those operators can be used via the the commands: '\sin', '\cos', '\ln', '\tan', '\cot', '\sec', '\csc', '\cosh' and '\sinh'.

The commands describe only how the operator looks, but not the arguments. To understand who to write arguments see an example:

\sin(a+b) = \sin a \cos b + \cos a \sin b

When you doubt it is better to enclose argument in the round parenthesis:

\sin(a+b) = \sin (a) \cos (b) + \cos (a) \sin (b)

To check yourself enter the TeX expression of the following formula: