Verify That the Equation Is an Identity $$\sin ( \alpha - \beta ) \cos ( \alpha + \beta ) = \sin \alpha \cos \alpha - \sin \beta \cos \beta$$

question 235

Essay

Verify that the equation is an identity.
- $$\sin ( \alpha - \beta ) \cos ( \alpha + \beta ) = \sin \alpha \cos \alpha - \sin \beta \cos \beta$$

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Definitions:

Prodromal Phase

A stage that precedes the onset of a disease, characterized by early symptoms that might indicate the start of a disease before specific symptoms occur.

Socially Withdrawn

A behavior pattern where an individual prefers to avoid social interactions, often due to anxiety, depression, or personal preference.

Little Emotion

A state characterized by diminished expression or experience of emotions, also known as emotional blunting or flat affect, which can be a symptom of various psychological conditions.

Residual Phase

A stage in certain mental health conditions, such as schizophrenia, characterized by a reduction in severity of symptoms or their partial remission after an acute phase.