Časť:
Project ID:
9000111806
Accepted:
1
Clonable:
0
Easy:
0
Pre ktorú z nasledujúcich priamok platí, že jej odchýlka od priamky \(s\) je
rovná \(60^{\circ}\)?
\[
\begin{aligned}[t] s\colon x& = 2 + t, &
\\y & = -1 - 2t,
\\z & = 3 - t;\ t\in \mathbb{R}
\\ \end{aligned}
\]
\(\begin{aligned}[t] r\colon x& = t, &
\\y & = -3 + t,
\\z & = 1 + 2t;\ t\in \mathbb{R}
\\ \end{aligned}\)
\(\begin{aligned}[t] q\colon x& = 1, &
\\y & = -1 - t,
\\z & = 3 + 2t;\ t\in \mathbb{R}
\\ \end{aligned}\)
\(\begin{aligned}[t] p\colon x& = -5 - 2t,&
\\y & = 2 + 4t,
\\z & = 2 + 2t;\ t\in \mathbb{R}
\\ \end{aligned}\)