Complete the Identity $\sin ( \alpha + \beta ) \sin ( \alpha - \beta ) =$

question 119

Multiple Choice

Complete the identity.
- $\sin ( \alpha + \beta ) \sin ( \alpha - \beta ) =$ ?

• A) \(\cos ^ { 2 } \beta - \cos ^ { 2 } \alpha\)
• B) \(\sin ^ { 2 } \alpha - \cos ^ { 2 } \beta\)
• C) \(\cos ^ { 2 } \beta + \cos ^ { 2 } \alpha\)
• D) \(\sin ^ { 2 } \beta - \sin ^ { 2 } \alpha\)

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Definitions:

Maintenance Rehearsal

A cognitive process involving the repetitive review of information to keep it in short-term memory for extended periods.

Repeating Items

The act of presenting the same content or material multiple times to improve memory retention or emphasize importance.

Allan Baddeley

A cognitive psychologist best known for his work on the model of working memory.

Short-term Memory

A component of memory where small amounts of information can be stored for a short period of time, typically seconds to minutes.