Solve the equation on the interval 0 ? ? < 2?.cos ? = sin ?
A. 
, 
B. 
, 
C. 
, 
D. 
, 
Answer: C
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Find the indicated sum.
A. -35 B. -14 C. -5 D. -30
Find the exact value of the expression.cos 
A. 
B. 
C. 
D. 
What did Jean Piaget call the process by which changes occur in the existing way a child thinks in response to encounters with new stimuli or events?
A. assimilation B. accommodation C. cognition D. schemes
Who was one of the first American psychologists to advocate a behavioral approach to understanding human development?
A. B. F. Skinner B. John B. Watson C. Jean Piaget D. S. C. Johnson