| tangent |
|
| The trig function tangent,
written tan θ. tan θ equals  . For
acute angles, tan θ can be found by the
SOHCAHTOA definition as shown below on the left.
The circle definition, a generalization of SOHCAHTOA,
is shown below on the right. f(x)
= tan x is a periodic function with
period π.
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