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Revision:Sec, cosec, cot

From The Student Room

TSR Wiki > Study Help > Subjects and Revision > Revision Notes > Mathematics > Sec, Cosec, Cot

Contents

Secant, cosecant and cotangent

Secant

\displaystyle \sec x = \frac{1}{\cos x}


Cosecant

\displaystyle \csc x = \frac{1}{\sin x}


Cotangent

\displaystyle \cot x = \frac{1}{\tan x}


Note: \sec x is not the same as \arccos x.


Example

If \sec x = 2,\ \cos x = \frac{1}{2},\ x = 60^o.


Graphs of sec x and cosec x

(diagram of these graphs missing)


Comments

This article is not sufficient to cover these functions for the FP modules.

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