Find the modulus of each of the following:
Question:

Find the modulus of each of the following:

$(-3-4 i)$

 

Solution:

Given: $z=(-3-4 i)$

Now, we have to find the modulus of $(-3-4 i)$

So, $|z|=|-3-4 i|=\sqrt{(-3)^{2}+(-4)^{2}}=\sqrt{9+16}=\sqrt{25}=5$

Hence, the modulus of $(-3-4 i)$ is 5

 

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