# Sec, Cosec, Cot

Source: https://projectalevel.co.uk/maths/trigonometry/sec_cosec_cot

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**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

![](https://content.projectalevel.co.uk/img/maths/sec_cosec.gif)