Use a Calculator to Give the Value to the Nearest $$\theta = \cos ^ { - 1 } ( 0.8910 )$$

question 91

Multiple Choice

Use a calculator to give the value to the nearest degree.
- $$\theta = \cos ^ { - 1 } ( 0.8910 )$$

• A) \(63 ^ { \circ }\)
• B) \(25 ^ { \circ }\)
• C) \(27 ^ { \circ }\)
• D) \(29 ^ { \circ }\)

---

Definitions:

Selling Price

The financial charge to a customer for purchasing a product or service.

Industrial Grinder

A heavy-duty machine used for reducing the size of materials through grinding or crushing in industrial settings.

Value-based Pricing

A pricing strategy where the price is based on the perceived value of a product or service to the customer rather than on the cost of production or historical prices.

Operating Cost

Costs incurred from the regular functioning of a company, encompassing lease payments, utility bills, and employee salaries.