Use the Given Information to Find the Exact Value of the Expression

question 14

Multiple Choice

Use the given information to find the exact value of the expression.
- $\sin \alpha = \frac { 3 } { 5 } , \alpha$ lies in quadrant II, and $\cos \beta = \frac { 2 } { 5 } , \beta$ lies in quadrant I $\quad$ Find $\cos ( \alpha - \beta )$ .

• A) \(\frac { - 8 + 3 \sqrt { 21 } } { 25 }\)
• B) \(\frac { 6 + 4 \sqrt { 21 } } { 25 }\)
• C) \(\frac { 6 - 4 \sqrt { 21 } } { 25 }\)
• D) \(\frac { 8 - 3 \sqrt { 21 } } { 25 }\)

---

Definitions:

False Beliefs

Misconceptions or misunderstandings that do not reflect reality, often studied in relation to theory of mind and cognitive development.

Negative Symptoms

Features of certain mental health conditions characterized by the absence or diminution of normal behaviors or emotions, such as apathy or lack of speech.

Schizophrenia

An intense psychological condition defined by changes in thought processes, awareness, emotions, communication, self-concept, and conduct.

Behavioural Deficits

Lacking or reduced abilities in specific behaviors, often compared to a norm or expected standard.