SOLUTION: Find the absolute value of the following complex number: z=2+5i

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Question 87259: Find the absolute value of the following complex number: z=2+5i
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
if you plot this point on an Argand diagram, just like a normal point in Cartesian coordinates, we have a point 2 along the Real axis (x-axis) and 5 up the Imaginary axis (y-axis). To find the length, we use Pythagoras' Theorem.

so, |z| = +sqrt%282%5E2+%2B+5%5E2%29+
|z| = +sqrt%284+%2B+25%29+
|z| = +sqrt%2829%29+

cheers
Jon