2010010705

Podoblasť: 
Goniometrické rovnice a nerovnice
Časť: 
A
Project ID: 
2010010705
Source Problem: 
1003085707
Accepted: 
0
Clonable: 
1
Easy: 
1
Množina riešení rovnice \( \cos\!\left(2\varphi + \frac{\pi}6\right) = - 1\) pre \( \varphi \in \langle 0;2\pi\rangle\) je:
\(\left\{ \frac{5\pi}{12}; \frac{17\pi}{12}\right\}\)
\(\left\{ \frac{5\pi}{12}; \frac{11\pi}{12}\right\}\)
\(\left\{ \frac{7\pi}{12}; \frac{13\pi}{12}\right\}\)
\(\left\{ \frac{7\pi}{12}; \frac{17\pi}{12}\right\}\)