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    Cambridge 4 unit

    Does the Cambridge 4 unit maths book have a lot of questions that arent in the HSC syllabus? Thats what my maths teacher said, and told us to skip quite a few (a lot but not HEAPS) of the questions in the complex number section and the conics section. Anyone confirm this? OR is he just lazy?
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    Complex Number question

    Came across this question was wondering how to go about solving it using De Moivre's Therorem Thanks in advance
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    Best book on extension2 while in year 11

    Anyone know of a good book/self teach to understand the basics for extension 2 while still in year 11?
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    sums and differences of angles

    Solve (show working) tan (x+y) + tan (x-y) 1- tan (x+y) tan (x-y) I forget!!!!
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    T-results

    Solve using the t-results 2Sinx- 3Cosx =1
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