Staff

Please select a resource from the list below.

Teach Yourself

• The addition formulae
  This unit details the addition formulae for sin(A+B), sin(A-B), etc.

Test Yourself

• Diagnostic Test - The addition formulae
• Exercise - The Addition Formulae

Video

A transcript of each video should be available in the Teach Yourself section above.

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• The addition formulae
  There are six so-called addition formulae often needed in the solution of trigonometric problems. In this unit we start with one and derive a second. Then we take another one as given and derive a second one from that. Finally we use these four to help us derive the final two. (Mathtutor Video Tutorial)