Find the Angle $\theta$ Between the Vectors $\begin{array} { l } \mathbf { u } = \langle 4,0 \rangle \\\mathbf { v } = \langle 0 , - 3 \rangle\end{array}$

Find the angle $\theta$ between the vectors.​ $\begin{array} { l } \mathbf { u } = \langle 4,0 \rangle \\\mathbf { v } = \langle 0 , - 3 \rangle\end{array}$ ​ (Round the answer to 1 decimal place. )
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A) $30 ^ { \circ }$
B) $110 ^ { \circ }$
C) $70 ^ { \circ }$
D) $105 ^ { \circ }$
E) $90 ^ { \circ }$

Correct Answer:

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