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Type: Posts; User: cmantzioros

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  1. Nov 18, 2005, 01:09 PM

    Question: Pre-Cal trig

    by cmantzioros
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    2,729

    SOHCAHTOA sin x = opposite/hypotenuse ...

    SOHCAHTOA

    sin x = opposite/hypotenuse

    therefore

    sin 72 = height of the house/length of the ladder
    sin 72 = height/30

    ...
  2. Nov 18, 2005, 01:06 PM

    Question: Complex numbers... Help needed!

    by cmantzioros
    Answers
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    1,664

    Complex numbers... help needed!

    In our exercises we are told to solve for x (element of a complex number)

    1. x^2 - 6x + 25=0

    The answer is x=3+4i or x=3-4i

    Can anyone tell me how these answers were derived?
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