TAN
NAME
tan - This function computes the tan of a number.
SYNOPSIS
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";
function deg2rad(value)
return value / 57.3;
endf
tan(deg2rad(180));
}}.),
q(res=0.));
With radians:
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=\[0,0,1.61978\].));
SEE ALSO
{{ include("includes/maths.sn") }}
AUTHOR
Written by Caroline Laplante, <claplante@sednove.com>
MODIFICATIONS
1.0 2014-09-09 21:24:14 laplante@sednove.com
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