Find, Correct to the Nearest Degree, the Angle Between the Planes

question 57

Multiple Choice

Find, correct to the nearest degree, the angle between the planes. $x + y - z = 1,5 x - 13 y + 10 z = 5$

• A) \(127 ^ { \circ }\)
• B) \(12 ^ { \circ }\)
• C) \(123 ^ { \circ }\)
• D) \(7 ^ { \circ }\)
• E) none of these

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