Find the Angle Between the Two Planes in Degrees $$\begin{array} { l } 2 x - y - 4 z = 4 \\- 3 x - 2 y + 4 z = 4\end{array}$$

Find the angle between the two planes in degrees. Round to a tenth of a degree.
$$\begin{array} { l } 2 x - y - 4 z = 4 \\- 3 x - 2 y + 4 z = 4\end{array}$$

A) $11.5 ^ { \circ }$
B) $54.1 ^ { \circ }$
C) $144.1 ^ { \circ }$
D) $39.0 ^ { \circ }$
E) $2.5 ^ { \circ }$

Correct Answer:

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