Find the Exact Value of the Expression $\cos 285 ^ { \circ }$

question 256

Multiple Choice

Find the exact value of the expression.
- $\cos 285 ^ { \circ }$

• A) \(\frac { \sqrt { 2 } ( \sqrt { 3 } - 1 ) } { 4 }\)
• B) \(- \sqrt { 2 } ( \sqrt { 3 } + 1 )\)
• C) \(- \sqrt { 2 } ( \sqrt { 3 } - 1 )\)
• D) \(- \frac { \sqrt { 2 } ( \sqrt { 3 } - 1 ) } { 4 }\)

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Definitions:

Solution Focused Therapy

A short-term goal-oriented therapy that focuses on finding solutions in the present time and exploring hope for the future.

Dysfunctional Cognitions

Distorted or irrational thought patterns that negatively affect one's behavior and emotional wellbeing.

Constructivist Therapies

A category of psychotherapy that holds that reality is constructed through human activity; therapies focus on the client's perspective and aim to facilitate change through exploration of personal meaning.

Therapy Techniques

Methods and strategies employed by therapists to facilitate psychological healing and growth in individuals, couples, or groups.