2010013109 | math4u.vsb.cz

SubArea:

Complex numbers in algebraic and polar form

Level:

Project ID:

2010013109

Source Problem:

Accepted:

0

Clonable:

1

Easy:

0

Let

z = \frac{1}{\cos \frac{2 π}{3} + i \sin \frac{2 π}{3}}

. Which of the following numbers is not the value of the argument of

z

?

120^{\circ}

- \frac{2 π}{3}

\frac{4 π}{3}

240^{\circ}