Find the Exact Value of the Given Expression Using a Sum

question 62

Multiple Choice

Find the exact value of the given expression using a sum or difference formula. $\cos \frac { 13 \pi } { 12 }$

• A) \(\frac { \sqrt { 3 } + 1 } { 2 \sqrt { 2 } }\)
• B) \(\frac { - \sqrt { 3 } + 1 } { 2 \sqrt { 2 } }\)
• C) \(\frac { \sqrt { 3 } - 1 } { 2 \sqrt { 2 } }\)
• D) \(\frac { - \sqrt { 3 } - 1 } { 2 \sqrt { 2 } }\)

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Definitions:

Helping Profession

Occupations focused on assisting individuals, families, groups, and communities to enhance or restore their capacity for social functioning, and creating societal conditions favorable to this goal.

Burnout

A state of physical, emotional, and mental exhaustion caused by prolonged stress, often seen in helping professions.

Rapid Advancement

Quick progress or promotion within a professional or organizational context.

Time-Management

The process of organizing and planning how to divide your time between specific activities to increase effectiveness, efficiency, or productivity.