Find the Angle of Intersection of the Planes in Degrees $$\begin{array} { l } 3 x - 2 y + 4 z = 3 \\5 x - 3 y + 3 z = - 6\end{array}$$

Find the angle of intersection of the planes in degrees. Round to a tenth of a degree.
$$\begin{array} { l } 3 x - 2 y + 4 z = 3 \\5 x - 3 y + 3 z = - 6\end{array}$$

A) $- 0.8 ^ { \circ }$
B) $69.1 ^ { \circ }$
C) $20.9 ^ { \circ }$
D) $43.1 ^ { \circ }$
E) $0.4 ^ { \circ }$

Correct Answer:

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