Question

Find the modulus of -2-6i A. 40 B. -40 C. 6.3 D. -6.3

Answer 1

Answer:

Option C.  $6.3$

Step-by-step explanation:

we know that

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

Let

c-----> the modulus

$c=\sqrt{(-2)^{2}+(-6)^{2}}$

$c=\sqrt{4+36}$

$c=\sqrt{40}=6.3$