Write the Given Expression as the Cosine of an Angle $$\cos 45 ^ { \circ } \cos 40 ^ { \circ } + \sin 45 ^ { \circ } \sin 40 ^ { \circ }$$

question 53

Multiple Choice

Write the given expression as the cosine of an angle.​ $$\cos 45 ^ { \circ } \cos 40 ^ { \circ } + \sin 45 ^ { \circ } \sin 40 ^ { \circ }$$

• A) \(\cos \left( 45 ^ { \circ } \right)\)
• B) \(\cos \left( 5 ^ { \circ } \right)\)
• C) \(\cos \left( - 80 ^ { \circ } \right)\)
• D) \(\cos \left( 40 ^ { \circ } \right)\)
• E) \(\cos \left( 85 ^ { \circ } \right)\)

Evaluate the effect of task difficulty and incentive value on achievement motivation.

Understand the role of affective forecasting in anticipating emotional outcomes.

Comprehend the use of the Thematic Apperception Test in assessing personality traits.

Recognize the physiological systems involved in emotional response.

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