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FP3 help!!! de moivres theorum watch

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    Hi, im using the online textbook from aqa. Im just looking at chapter 4 on de moivres theorum. Its page 63 and after the first paragraph goes on to 'establish some important results'.

    Here is the link http://store.aqa.org.uk/qual/pdf/AQA-MFP2-TEXTBOOK.PDF

    The first five lines of working from the word 'suppose...': im sure its littered with mistakes. Can someone please confirm this for me...

    Thanks very much!
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    Are you sure you've given us the correct page number?
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    nope....63 it is! soz
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    im guessing that the first line should read "suppose z=cos(theta) + i sin(theta)" and the fourth line, where it says (=z) should read (=1/z).

    then where it says "so," it should read 1/z = cos(theta) - i sin(theta).

    Terrible way of explaingin it but see if you agree with me!
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    I can't see anything wrong with it...
 
 
 

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