Farthingale Publications

A Lancastrian hobby website of curiosities and nonsense

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Fun with Trigonometry

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Trigonometry dates back to the ancient Greek astronomer/mathematicians and has been studied for centuries by students all over the world. If like me your experiences of the subject go back to the middle of the last century and the finer points are still somewhat shrouded in mystery - take up this nostalgic challenge and brush up with these basic exercises. Derive from first principles the formulae for the Sine, Cosine, and Tangent of compound angles (select the appropriate link):-

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Palfreyman - September 2016