Find the Angle of Intersection of the Planes in Degrees

question 195

Multiple Choice

Find the angle of intersection of the planes in degrees.Round to a tenth of a degree.
3x + 2y - 6z = -5
-6x + 3y + z = 1

• A)112.3°
• B)2.0°
• C)-22.3°
• D)109.4°
• E)20.8°

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