Level:
Project ID:
9000107508
Accepted:
1
Clonable:
0
Easy:
0
Find \(\cos \varphi \) where
\(\varphi \) is the angle
between the lines \(p\)
and \(q\).
\[
\begin{aligned}[t] p\colon x& = t, &
\\y & = -3;\ t\in \mathbb{R};
\\ \end{aligned}\quad q\colon y = 1
\]
\(1\)
\(\frac{1}
{\sqrt{2}}\)
\(0\)
\(\frac{\sqrt{10}}
{10} \)