Write the Word or Phrase That Best Completes Each Statement $$\cos ^ { 2 } x - \sin ^ { 2 } x = 1 - 2 \sin ^ { 2 } x$$

question 187

Essay

Write the word or phrase that best completes each statement or answers the question.
Establish the identity.
- $$\cos ^ { 2 } x - \sin ^ { 2 } x = 1 - 2 \sin ^ { 2 } x$$

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Definitions:

Meals

The portioned eating occasions in a day typically including breakfast, lunch, and dinner, and sometimes snacks, consisting of prepared food.

Cost Function

A mathematical relationship that describes how production costs change with changes in the volume of production.

Snow Removal

The process of removing snow after a snowfall to make travel easier and safer.

Long-Run Equilibrium

A state in which all factors of production and costs are variable, allowing firms to make adjustments so that supply equals demand, resulting in no economic profit in perfect competition.