[tex]r = \sqrt{ {2}^{2} + {( - 2 \sqrt{3} )}^{2} } = \sqrt{16} [/tex]
[tex]r = 4[/tex]
[tex] \cos(\varphi) = \frac{2}{4} = \frac{1}{2} \\ \sin(\varphi) = - \frac{2 \sqrt{3} }{4} = - \frac{ \sqrt{3} }{2} [/tex]
Из этой системы ясно, что:
[tex]\varphi = \frac{5\pi}{3} [/tex]
D)
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[tex]r = \sqrt{ {2}^{2} + {( - 2 \sqrt{3} )}^{2} } = \sqrt{16} [/tex]
[tex]r = 4[/tex]
[tex] \cos(\varphi) = \frac{2}{4} = \frac{1}{2} \\ \sin(\varphi) = - \frac{2 \sqrt{3} }{4} = - \frac{ \sqrt{3} }{2} [/tex]
Из этой системы ясно, что:
[tex]\varphi = \frac{5\pi}{3} [/tex]
D)