Name
Math.tan( ) Method — compute the tangent of an angle
Availability
Flash 5; may be used when exporting Flash 4 movies
Synopsis
Math.tan(theta)
Arguments
- theta
An angle, in radians (not degrees), in the range -π/2 to π/2.
Returns
The tangent of theta
(the result is in the
range -Infinity
to Infinity
).
Description
The tan( )
method returns the trigonometric
tangent of an angle. In a right triangle, the tangent of an angle is
the result of dividing the length of the side opposite the angle by
the length of the side adjacent to the angle. This is also the same
as the ratio Math.sin(theta)/Math.cos(theta), so
as cos(theta)
approaches zero,
tan(theta)
approaches
Infinity
. Therefore,
tan(theta)
is not calculable for the values
-π/2, π/2, -3π/2, 3π/2, etc.
Example
trace (Math.tan(0)); // Displays: 0 trace (Math.tan(Math.PI/4)); // Displays: 1
See Also
Math.atan( )
, Math.cos( )
,
Math.sin( )
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