## Precalculus: Mathematics for Calculus, 7th Edition

The real part of the complex number $i\sqrt 3$ is 0 and the imaginary part is $\sqrt 3$.
Complex numbers are written in the form a+bi, with a being the real number and b being the imaginary number. Since there is no "a" in this complex number a must be equal to zero. Therefore, b=$\sqrt 3$, so the real part is 0 and the imaginary part is $\sqrt 3$.