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    Trig Identity Question- Extension

    Help, I've just discovered Bored of Studies and hoping someone can help me with this question which is doing my head in. If (a+b)/ cosec x = (a-b)/ cot x show that cosec . cot x= (a^2- b^2)/ 4ab Didn't know how to type in- the question is from Cambridge 4F Q 18b. 18a was really easy but...
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