Use Identities to Write the Expression as a Single Function $\cos \left( \theta + \frac { \pi } { 2 } \right)$

question 397

Multiple Choice

Use identities to write the expression as a single function of x or θ.
- $\cos \left( \theta + \frac { \pi } { 2 } \right)$

• A) \(- \sin \theta\)
• B) \(- \cos \theta\)
• C) \(\sin \theta\)
• D) \(\cos \theta\)

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Definitions:

Morpheme

The smallest significant unit of meaning in a word (e.g., the word boys has two morphemes, boy and -s).

Phoneme

The smallest significant unit of sound in a language. Alphabetic characters roughly correspond to phonemes (e.g., apt, tap, and pat are all made up of the same phonemes).

Hierarchical Structure

An organizational structure where entities are ranked one above the other based on their level of authority or importance.

Phonemes

The smallest units of sound in a language that are capable of conveying a distinct meaning.