Let $\mathbf{P}$ be the matrix for projecting onto the vector $\begin{pmatrix} 4 \\ -7 \end{pmatrix}.$  Find $\det \mathbf{P}.$
Question:
Let $\mathbf{P}$ be the matrix for projecting onto the vector $\begin{pmatrix} 4 \\ -7 \end{pmatrix}.$  Find $\det \mathbf{P}.$
Answer:
Let's think step by step.

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Let $\mathbf{P}$ be the matrix for projecting onto the vector $\begin{pmatrix} 4 \\ -7 \end{pmatrix}.$  Find $\det \mathbf{P}.$
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