Use Addition or Subtraction Formulas to Find the Exact Value $\cos 105 ^ { \circ }$

question 93

Essay

Use addition or subtraction formulas to find the exact value of $\cos 105 ^ { \circ }$ .

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Definitions:

Nonverbal Communication

The transmission of information or feelings without the use of spoken words, using gestures, facial expressions, and body language instead.

Paralanguage

Non-verbal elements of communication used to modify meaning and convey emotion, such as tone of voice, loudness, and pitch.

Voice Mail Techniques

Strategies or methods used to effectively communicate and manage messages through a voice mail system.

Professional Talking

The use of formal and industry-specific language in a business setting.