If $\theta$ is the angle between the vectors $\begin{pmatrix} 3 \\ -4 \end{pmatrix}$ and $\begin{pmatrix} 12 \\ 5 \end{pmatrix}$, then find $\cos \theta$.
Question:
If $\theta$ is the angle between the vectors $\begin{pmatrix} 3 \\ -4 \end{pmatrix}$ and $\begin{pmatrix} 12 \\ 5 \end{pmatrix}$, then find $\cos \theta$.
Answer:
Let's think step by step.

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\frac{16}{65}
If $\theta$ is the angle between the vectors $\begin{pmatrix} 3 \\ -4 \end{pmatrix}$ and $\begin{pmatrix} 12 \\ 5 \end{pmatrix}$, then find $\cos \theta$.
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