Find the Exact Value $\cos 75 ^ { \circ } \cos 15 ^ { \circ } + \sin 75 ^ { \circ } \sin 15 ^ { \circ }$

question 81

Essay

Find the exact value. $\cos 75 ^ { \circ } \cos 15 ^ { \circ } + \sin 75 ^ { \circ } \sin 15 ^ { \circ }$

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Definitions:

Psychological Therapy

The treatment of mental health issues through structured interactions between a therapist and a client, using established psychological methods.

Role-play

An educational or therapeutic technique involving acting out roles in specific scenarios to learn or practice certain behaviors or skills.

Fear

An emotional response to perceived threats or danger, involving both physiological and behavioral reactions.

Debilitating

Causing a serious weakening or impairment of physical or mental strength.