<PRE><B>Question 512605</B>
square root of -4 = 2i
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Absolute value of 5+4i over 7-5i
|(5+4i)/(7-5i)|
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Multiply numerator and denominator by 7+5i to get
= |[(5+4i)(7+5i)]/(49+25)|
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= |(35+20+53i)/74|
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= |(55/74) + (53/74)i|
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= sqrt[(55/74)^2 + (53/74)^2]
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= sqrt(1.0654)
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= 1.0322
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Cheers,
Stan H.
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