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Use the half-angle formulas to determine the exact value of the given trigonometric expression.
Mental Image
A representation of a sensory experience formed in the mind without the presence of external stimuli.
Physical Self
The aspect of an individual's self-concept related to physical appearance, strength, and health.
Testicular Cancer
A type of cancer that originates in the testicles, the male reproductive glands located in the scrotum.
Role Strain
The stress or strain experienced by an individual when facing difficulty in fulfilling multiple roles in personal or professional life.
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