Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Answer: A
Mathematics
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Determine whether the pair of lines is parallel, perpendicular, or neither. 9x + 3y = 1227x + 9y = 39
A. Parallel B. Perpendicular C. Neither
Mathematics
Write the improper fraction as a mixed number.
A. 4
B. 
C. 2
D. 3
Mathematics
Provide an appropriate response.Which is smaller, 
or 
?
A. 
B. They are equal.
C. 
Mathematics
Use the product rule, quotient rule, or power rule to expand the logarithmic expression. Wherever possible, evaluate logarithmic expressions.log
A. log
U - log
6
B. log
6 - log
U
C. log
6 - U
D. log
U - 6
Mathematics