Find the exact value of the expression.cos 
sin 
- cos 
sin 
A. 
B. 1
C. 
D. 
Answer: A
Mathematics
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Express as a single logarithm and, if possible, simplify.log4 12 + log4 9
A. log4 21 B. log8 108 C. log8 21 D. log4 108
Mathematics
Find the limit algebraically.
A. 1
B. Does not exist
C. 
D. 0
Mathematics
The first several terms of a sequence are given. Find the indicated partial sum.2, -6, 10, -14, . . . ; S6
A. 6 B. -10 C. 12 D. -12
Mathematics
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. - 
Mathematics