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# FP3 help!!! de moivres theorum watch

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1. 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'.

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!
2. Are you sure you've given us the correct page number?
3. nope....63 it is! soz
4. 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!
5. I can't see anything wrong with it...

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Updated: January 15, 2010
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