Use a Calculator to Give the Real Number Value $$y = \cos ^ { - 1 } ( 0.8910 )$$

question 104

Multiple Choice

Use a calculator to give the real number value. Round the answer to 7 decimal places.
- $$y = \cos ^ { - 1 } ( 0.8910 )$$

• A) \(0.5063492\)
• B) \(0.4712533\)
• C) \(0.4365083\)
• D) \(1.1000010\)

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Definitions:

Marginal Costs

The escalation in total expenses resulting from the manufacture of an additional product or service unit.

Study Time

A period dedicated to academic work or learning outside of formal teaching sessions.

Marginal Analysis

A review of the extra advantages gained from an activity in relation to the extra expenses it generates.

Benefit

The advantage or gain received from a decision, action, or policy, often used in the analysis of choices in economics.