Use an Identity to Write the Expression as a Single $$\sqrt { \frac { 1 - \cos 20 ^ { \circ } } { 2 } }$$

question 298

Multiple Choice

Use an identity to write the expression as a single trigonometric function or as a single number.
- $$\sqrt { \frac { 1 - \cos 20 ^ { \circ } } { 2 } }$$

• A) \(\cos 10 ^ { \circ }\)
• B) \(\cot 10 ^ { \circ }\)
• C) \(\tan 10 ^ { \circ }\)
• D) \(\sin 10 ^ { \circ }\)

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Definitions:

Personality

The combination of characteristics or qualities, including patterns of thought, feelings, and behaviors that make a person unique.

Reactive Autonomic Nervous System

Refers to the part of the autonomic nervous system that responds involuntarily to stress, causing physical reactions.

Emotional Stability

A personality trait that reflects the extent to which a person's mood and emotions are consistent and not prone to frequent fluctuations.

Self-esteem

A person's internal judgment of their own significance or merit.