A LevelMathsCambridge (CIE)Pure 3Revision NotesTrigonometryReciprocal Trigonometric FunctionsDefinitions of Reciprocal Trigonometric Functions

Definitions of Reciprocal Trigonometric Functions (Cambridge (CIE) A Level Maths): Revision Note

Exam code: 9709

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Reciprocal Trig Functions - Definitions

What are the reciprocal trigonometric functions?

  • There are three reciprocal trig functions corresponding to the three regular trig functions

 

Recip-Trig-Functs-Defs, A Level & AS Maths: Pure revision notes

  • Cotangent can also be written in terms of sine and cosine

Recip Trig Functs Cotan, A Level & AS Maths: Pure revision notes

Examiner Tips and Tricks

  • To solve equations with the reciprocal trig functions, convert them into the regular trig functions and solve in the usual way.

  • Don't forget that both tan and cot can be written in terms of sin and cos (see the Worked Example below).

  • You will sometimes see csc instead of cosec for cosecant.

Worked Example

Recip Trig Functs Example, A Level & AS Maths: Pure revision notes

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