Use a Calculator to Give the Value to the Nearest $$\theta = \cos ^ { - 1 } ( - 0.9397 )$$

question 441

Multiple Choice

Use a calculator to give the value to the nearest degree.
- $$\theta = \cos ^ { - 1 } ( - 0.9397 )$$

• A) \(- 20 ^ { \circ }\)
• B) \(162 ^ { \circ }\)
• C) \(160 ^ { \circ }\)
• D) \(157 ^ { \circ }\)

Describe the conditions under which a given formula for calculating queue statistics is valid or invalid.

Apply queuing theory to solve real-world problems, such as calculating waiting times in service systems.

Differentiate between continuous and discrete variables with examples.

Understand the concept of a transient period in the context of queuing systems.

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