Use the Unit Circle Below to Find All Real Numbers

question 44

Multiple Choice

Use the unit circle below to find all real numbers t between 0 and 2 p for which cos t = 0.9. Estimate answer to the nearest tenth.

• A)0.5, 5.8
• B)4.3, 5.2
• C)2.0, 0.5
• D)2.7, 3.6
• E)1.1, 2.0

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Definitions:

Vocalizations

The sounds produced by the vocal cords, including speech, cries, or other vocal output.

Infant

A young child in the earliest period of life, especially from birth to one year old.

Classical Conditioning

A training method where two different stimuli are paired repeatedly, leading to a response initially triggered by the second stimulus being ultimately triggered by the first stimulus alone.

Laughing

The act or sound of expressing mirth, joy, or amusement through vocal chuckles or guffaws.