    # tan

This function computes the tan of a number.

# TAN

## NAME

tan - This function computes the tan of a number.

tan(number)

## DESCRIPTION

This mathematical function allows the user to compute the tan of an argument defined in radians. A radian is 57,3 degrees. For explanation on how to change your argument from radians to degrees, see the Examples section.

## PARAMETERS

number
Specify the number (float) used as argument for the tan function.

## RETURN

The tan value of the argument.

## EXAMPLES

Note: In the followings examples, the _ between the { should be removed to make it work.

```One can use this function with degrees (using this other function called deg2rad):

test(q(res={_{
%include "/includes/extenso.sn";
return value / 57.3;
endf
}}.),
q(res=0.));

test(q(res={_{
%include "/includes/extenso.sn";
tan(PI);}}.),
q(res=0.));

With integers:

test(q(res={_{tan(45);}}.),q(res=1.61978.));

Note that when using a number greater than 2PI, the function will simply go around the
circle until reaching the number. For example, tan(4PI)=0 since it only means
that the function went around the circle twice. The only possible answers are
those of the trigonometric circle.

With other variables:

test(q(res={_{
%include "/includes/extenso.sn";
a=PI/4;
tan(a);
}}.),
q(res=1.));

With another trigonometric function:

test(q(res={_{
%include "/includes/extenso.sn";
a=sin(0);
tan(a);
}}.),
q(res=0.));

With an array:

test(q(res={_{tan(PI,0,45);}}.),q(res=\[0,0,1.61978\].));
```