HELP!! IGCSE Further Maths Question

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  1. Cola_23's Avatar
    1 28-05-2012  00:24
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    • Location: UK
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    HELP!! IGCSE Further Maths Question
    Question and solution attached

    Don't understand how you get the first part. Where does the angle 120 come from?

    Many thanks in advance!
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  2. Above.The.Empyrean's Avatar
    2 28-05-2012  12:17
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    • Location: Gloucester
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    Re: HELP!! IGCSE Further Maths Question
    It's divided into three triangles.

    As a circle is 360 degrees, it's discriminated into three parts, thus, it's 360/3 = 120 degrees.
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