Find the Angle Between the Two Planes $\begin{array} { l } 3 x - 4 y + 5 z = 6 \\x + y - z = 2\end{array}$

question 138

Multiple Choice

Find the angle between the two planes. $\begin{array} { l } 3 x - 4 y + 5 z = 6 \\x + y - z = 2\end{array}$

• A)81.6°
• B)83.2°
• C)83.8°
• D)80.6°
• E)79.6°

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