Find the Angle Between the Two Planes $\begin{array} { l } x - 4 y + z = - 3 \\3 x + 3 z + 4 = 0\end{array}$

question 70

Multiple Choice

Find the angle between the two planes. $\begin{array} { l } x - 4 y + z = - 3 \\3 x + 3 z + 4 = 0\end{array}$

• A)71.5 \(^\circ\)
• B)72.5 \(^\circ\)
• C)73.5 \(^\circ\)
• D)70.5 \(^\circ\)
• E)69.5 \(^\circ\)

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