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

question 98

Multiple Choice

Find, correct to the nearest degree, the angle between the planes. Select the correct answer.
$$x + y - z = 1,3 x - 13 y + 6 z = 5$$

• A) \(129 ^ { \circ }\)
• B) \(8 ^ { \circ }\)
• C) \(5 ^ { \circ }\)
• D) \(102 ^ { \circ }\)
• E) none of these

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