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why is my answer wrong? c3 trig question Watch

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    cot^2(x) +1=cosec^2(x)
    use that identity from the start
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    I am still looking for where you went wrong, but i would say it is better to use identity cot^2(x)=cosec^2(x)-1 and then get a quadratic equation of cot
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    then put into double brackets after simplifying
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    just remind you the denominator=0 will never be considered
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    (Original post by Synikk)
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    In addition to above, don't set the denominator as 0. What happens when you divide by 0?
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    edit: I understand how to do it with the identity and that it's easier, i already did it that way but was exploring another way

    Thanks for the responses, i realised my mistake with the numerator (i missed two values that were in range with sin 3(theta) = 1/3. But can someone please explain to me why my equating my denominator to zero is wrong?
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    (Original post by Synikk)
    edit: I understand how to do it with the identity and that it's easier, i already did it that way but was exploring another way

    Thanks for the responses, i realised my mistake with the numerator (i missed two values that were in range with sin 3(theta) = 1/3. But can someone please explain to me why my equating my denominator to zero is wrong?
    Try dividing something by 0 and see if you get 0
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    (Original post by RDKGames)
    Try dividing something by 0 and see if you get 0
    ah i see im getting = 0 confused with no solution. Thanks!
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    looks like other than the dividing by zero looks right
 
 
 
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