Find the exact value of the expression.sin 
A. 
(
- 1)
B. - 
C. -
(
- 1)
D. 
Answer: D
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Complete the identity.csc2 
- sec2 
= ?
A. 0
B. 
C. 4 cot ? csc ?
D. 2 sin2 ? sec ?
Classify as an expression or an equation.7x + 1
A. Equation B. Expression
Specialists in lifespan development share one concern: understanding the growth and change that occur during the course of life.
Answer the following statement true (T) or false (F)
A researcher working with college football players is conducting a long-term study to examine an athlete's decline in physical performance as the athlete ages. What type of development would the researcher most likely be studying?
A. cognitive B. personality C. physical D. social