Secant, cosecant and cotangent
secant x or sec x = 1
cos x
cosecant x, or cosec x = 1
sin x
cotangent x, or cot x = 1
tan x
Note, sec x is not the same as arccos x.
Example:
If sec x = 2, cos x = ½, x = 60º
Graphs of sec x and cosec x
