Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos ? = 
, 
< ? < 2?Find sin(2?).
A. - 
B. - 
C. 
D. 
Answer: A
Mathematics
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Solve the problem.If 4 hours are required to type 12 pages, how many hours would be required to type 21 pages?
A. 3 hr B. 2 hr C. 8 hr D. 7 hr
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Perform the indicated operation and write the answer in lowest terms. 
- 
A. 
B. 
C. 
D. 
Mathematics
Use the rules of exponents to simplify the expression. Write the answer with positive exponents. Assume that all variables represent positive real numbers.(
)2(m-1/8b1/6)-2
A. 
B. 
C. 
D. 
Mathematics
If 
, find cos (-?).
?
A. 
B. 
C. 04
D. 
E. 
Mathematics