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

question 45

Multiple Choice

Find, correct to the nearest degree, the angle between the planes. $$x + y - z = 1,10 x - 15 y + 20 z = 5$$

• A) \(122 ^ { \circ }\)
• B) \(12 ^ { \circ }\)
• C) \(22 ^ { \circ }\)
• D) \(102 ^ { \circ }\)
• E) none of these

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Definitions:

Variable Overhead

Costs that change with the level of production or business activity, including materials and labor that fluctuate with output.

Efficiency Variance

A measure in cost accounting used to assess the efficiency with which inputs are converted into outputs, often looking at differences in labor or material usage.

Direct Labor-Hours

The total hours worked by employees directly involved in the production process, used as a measure for allocating labor costs to products or services.

Variable Overhead

Costs of indirect manufacturing that change with the level of production output, such as utilities for the manufacturing plant.