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C3 Trigonometry help

  1. Oct 10, 2007 #1

    Could someone please help me with the following question? I would really appreciate any help as I am completely stuck at the moment.

    Solve sinx + sin(x/2) = 0 when x is between (and including) 0 and 360 degrees.

    Thank you.

  2. jcsd
  3. Oct 10, 2007 #2


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    Staff Emeritus
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    Gold Member

    Hey Cathy,

    Try writing;

    [tex]\sin(x) = -\sin(x/2)[/tex]

    [tex]\sin(x) = \sin(-x/2)[/tex]
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