Trigonometry

Chapter 3  -

Trigonometry 

Reciprocal functions cosec x Tutorial

Graphs of reciprocal functions . Tutorial

Compound angles. Using addition formulas. 

• sin(A±B), cos(A±B) and tan(A±B)

• Using the Addition formulae to get exact values

• Proving identities using the addition formulae

• Identities - Addition type - Equations

Double angle type – Playlist

• Identities for sin2A, cos2A and tan2A

• Examples using double angle identities

• Solving equations using double angle identities

• Exam Questions - Double Angles

Harmonic Formulae – Playlist

• Harmonic Identities Rsin(x ± α), Rcos(x ± α)

• Equations using harmonic identities

• Harmonic identities - Max and Min

• Exam Questions - Harmonic identities and equations

Work to help revise, exam questions with answers. 

Questions on cosec, sec and cot    Answers

Questions on trig identities    Answers

Questions on addition and double angles  Answers

Questions on harmonic form (R alpha/R form)   Answers

Mixed exam questions questions with video tutorial answers