Evaluate 
by locating the correct angle on a unit circle. 
Definitions:
Selling Price
The amount a customer pays to purchase a product or service.
Value-based Pricing
Pricing strategy where the price is based on the perceived value of a product or service to the customer rather than the cost of production.
Industrial Grinder
A machine tool used in manufacturing for grinding, which is a process of removing material using abrasion.
Preventive Maintenance
Routine maintenance and servicing of equipment to prevent unexpected breakdowns and failures.
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