Freeflows
Intersection Angle of Lines
One line is parameterized by \[\begin{pmatrix} 2 - 3t \\ -5 - 2t \\ 1 - 6t \end{pmatrix}.\]Another line is parameterized by \[\begin{pmatrix} -\frac{3}{2} + s \\ 2s \\ -6 + 2s \end{pmatrix}.\]The two lines intersect at $ P $. If $ \theta $ is the acute angle formed by the two lines at $ P, $ then find $ \cos \theta $.
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- $\frac{a}{b}$
- .
- 0
- =
- %
- $a^n$
- $a^{\circ}$
- $a_n$
- $\sqrt{}$
- $\sqrt[n]{}$
- $\pi$
- $\ln{}$
- $\log$
- $\theta$
- $\sin{}$
- $\cos{}$
- $\tan{}$
- $($
- $)$
- $[$
- $]$
- $\cap$
- $\cup$
- $,$
- $\infty$