Level:
Project ID:
2010013101
Source Problem:
Accepted:
0
Clonable:
1
Easy:
0
Given \(z_{1} = 4\left (\cos \frac{7\pi}
{3} + \mathrm{i}\sin \frac{7\pi}
{3} \right )\)
and \(z_{2} = \frac12\left (\cos \frac{\pi}
{6} + \mathrm{i}\sin \frac{\pi}
{6} \right )\),
evaluate \(z_{1}\cdot z_{2} \).
\( 2\mathrm{i}\)
\(- 2\mathrm{i}\)
\(2\)
\(-2\)