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    Prove that cosec4x - cot4x = cosec2x + cot2x

    I tried dividing through by sin and cos and even make them under the same denominator, but im having no luck.

    A little help please?
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    think, difference of 2 squares
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    cosec = 1/sin and cot = 1/tan

    then use compound angle formulae and it should pan out with a bit of algebraic manipulation ob the left hand side....
 
 
 
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Updated: November 12, 2008

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