9000035605

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Project ID: 
9000035605
Source Problem: 
Accepted: 
1
Clonable: 
0
Easy: 
0
The number \(\cos \frac{7} {6}\pi + \mathrm{i}\sin \frac{7} {6}\pi \) is a solution of a quadratic equation with real valued coefficients. Find the second solution.
\(\cos \frac{5} {6}\pi + \mathrm{i}\sin \frac{5} {6}\pi \)
\(\cos \frac{1} {6}\pi + \mathrm{i}\sin \frac{1} {6}\pi \)
\(\cos \frac{7} {6}\pi + \mathrm{i}\sin \frac{7} {6}\pi \)
\(\cos \frac{11} {6} \pi + \mathrm{i}\sin \frac{11} {6} \pi \)