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It is a pity that so few people understand mathmatics (particularly politititans)
The sine rule for solving triangles was one of the first things I learnt in trigonometry along with Pythagoras' theorem, and we had to prove the formulae were correct. However that was a long time before hand held scientific calculators.
Digital calculators were accounted for by five on each hand and only a small fraction of the class could use these accurately in any case but we at least had trig and log tables.
Barry
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