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23 June, 11:41

Find the modulus of - 2 - 6i.

40

-40

6.3

-6.3

+4
Answers (1)
  1. 23 June, 13:15
    0
    The modulus of complex number can be computed with this equation:

    |z|=sqrt (Re (z) ^2+Im (z) ^2)

    z = - 2-6i

    Re (z) = - 2, so Re (z) ^2=4

    Im (z) = - 6, so Im (z) ^2=36

    |z|=sqrt (36+4) = sqrt (40) = 6.3
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