kasilik kasilik
  • 23-10-2018
  • Mathematics
contestada

Find the modulus of -2-6i

A. 40
B. -40
C. 6.3
D. -6.3

Respuesta :

calculista
calculista calculista
  • 19-03-2019

Answer:

Option C.  [tex]6.3[/tex]

Step-by-step explanation:

we know that

To find the modulus of a complex number, apply the Pythagoras theorem

Let

c-----> the modulus

[tex]c=\sqrt{(-2)^{2}+(-6)^{2}}[/tex]

[tex]c=\sqrt{4+36}[/tex]

[tex]c=\sqrt{40}=6.3[/tex]

Answer Link

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