# How do you find the complex conjugate of 5i?

Jan 7, 2016

#### Answer:

$- 5 i$

#### Explanation:

The conjugate is obtained by changing the sign of imaginary part.
If the imaginary part is positive then the conjugate will contain imaginary part negative and if the imaginary part is negative then the conjugate will contain imaginary part positive.
Here $5 i$ is the imaginary part and is positive therefore the conjugate of $5 i$ is $- 5 i$.