Posted by Eliza on Wednesday, September 1, 2010 at 8:22am.
1.) Explain why 815i = 17

12th grade  Math  MathMate, Wednesday, September 1, 2010 at 9:40am
The magnitude of a complex number is defined in the complex space where the real numbers are on the horizontal axis, and the complex (imaginary) part is on the vertical axis.
The magnitude is defined to be the distance of the given point to the origin, namely for a complex number
a+bi,
a+bi= √(a²+b²)
So
8+15i=√(8²+15²)=17

11th grade  Math  Yosef, Tuesday, December 22, 2015 at 12:29pm
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