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    How do you go about finding the modulus of the midpoint of z1 and z2? I know how to find the argument of the midpoint which is pie/8, but finding the modulus is confusing to me =S

    thanks!
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    (Original post by TimetoSucceed)


    How do you go about finding the modulus of the midpoint of z1 and z2? I know how to find the argument of the midpoint which is pie/8, but finding the modulus is confusing to me =S

    thanks!
    Some simple geometry will do it. Mark the lines of equal length. What's the angle at the centre?
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    (Original post by ghostwalker)
    Some simple geometry will do it. Mark the lines of equal length. What's the angle at the centre?
    pie/2 i think, maybe i misunderstood what you said lol
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    (Original post by TimetoSucceed)
    pie/2 i think, maybe i misunderstood what you said lol
    That's correct. So you have a right-angled isosceles triangle with sides of length root(3). And you've bisected the hypotenuse.
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    ok so the big triangle is a right angled isosceles, so the two other angles are 45 each right?

    i get this, is this correct? lol



    if it is i can just do sine rule i guess to work out the side i need, but im still unsure if the angles are correct.

    edit: i think im way wrong lol, or maybe my drawing is wayyy off to scale
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    (Original post by TimetoSucceed)
    ...
    Your angles are right. Your drawing is a bit "way off". You can finish it with pythagoras, or whatever.
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    (Original post by ghostwalker)
    Your angles are right. Your drawing is a bit "way off". You can finish it with pythagoras, or whatever.
    thanks, i now understand this =].
 
 
 
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