Question

Find the modulus of -2-6i

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

Answer 1

Option C.
`6.3`

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=√(4+36)`

`c=√(40)=6.3`