Simplify the expression.cos 
tan 
sec ?
A. 1
B. sin ? - csc ?
C. -1
D. -cos ? + sec ?
Answer: C
Mathematics
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Evaluate the integral.
A. 
B. 
C. 102
D. 918
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Convert to percent.
A. 8% B. 80% C. 40% D. 1,000%
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Simplify the radical expression by factoring out the largest perfect nth power. 
A. 7
B. 49
C. 7
D. 15
Mathematics
Evaluate.-(-9)4
A. 6561 B. 36 C. -36 D. -6561
Mathematics