SOLUTION: if z1=5-6i, then the absolute value of z1-6i is？

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Question 1043153: if z1=5-6i, then the absolute value of z1-6i is？
Answer by ikleyn(52908) About Me  (Show Source):
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if z1=5-6i, then the absolute value of z1-6i is?
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If z1 = 5 - 6i, then z1 - 6i = 5 - 12i.

The absolute value of 5 - 12i is sqrt%285%5E2+%2B+12%5E2%29 = sqrt%2825%2B144%29 = sqrt%28169%29 = 13.

Answer. 13.

On complex numbers see the lessons
    - Complex numbers and arithmetic operations on them
    - Complex plane
    - Addition and subtraction of complex numbers in complex plane
    - Multiplication and division of complex numbers in complex plane
in this site.