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    Prove tan2x + Cot2x can be written as 2cosec4x? Anyone !!!!

    double angle formula used 😪
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    (Original post by plower)
    Prove tan2x + Cot2x can be written as 2cosec4x? Anyone !!!!

    double angle formula used 😪
    Write it in terms of sin2x and cos2x, then use a common denominator to make it one term.
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    (Original post by NotNotBatman)
    Write it in terms of sin2x and cos2x, then use a common denominator to make it one term.
    I thought you do (2tanx/1-tanx^2) + (1-tanx^2/2tanx) first?
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    (Original post by plower)
    I thought you do (2tanx/1-tanx^2) + (1-tanx^2/2tanx) first?
    It doesn't really matter what you do, as long as you prove LHS = RHS, but it may be a bit harder doing it in terms of tan2x (not tanx).
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    (Original post by NotNotBatman)
    Write it in terms of sin2x and cos2x, then use a common denominator to make it one term.
    Ohh... so what like sin2x/cos2x + cos2x/sin2x?
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    (Original post by plower)
    Ohh... so what like sin2x/cos2x + cos2x/sin2x?
    Yes.
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    (Original post by NotNotBatman)
    Yes.
    Didn't know you could do that....... allright thanks, I'll try it!
 
 
 
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