The ratio of the lengths of the adjacent and opposing sides is known as the tangent function. It has to be observed that the ratio of sine and cosine to the tan can also be used to express the tan. The following will be the tan function based on the diagram that was obtained above.
Tan a = Opposite/Adjacent = CB/BA
In terms of sine and cos, tan is also equivalent to:
Tan a = sin a/cos a
How do you Simplify (1 + tan x)/ (1 - tan x)?
By simplification of (1 + tan x)/ (1 - tan x) we get tan (π/4 + x)
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