Use the given information to find the exact value of the expression.sin ? = 
, ? lies in quadrant II, and cos ? = 
, ? lies in quadrant I
Find cos (? - ?).
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the problem.Find the area of the region enclosed by y = 4x sin x and the x-axis for 0 ? x ? ?.
A. 2? B. ? C. 4? D. 8?
Mathematics
Provide an appropriate response.Which of the following venues would be least likely to include the sales tax in the quoted price?
A. auto dealership B. amusement park C. sporting event D. flea market
Mathematics
Solve the right triangle shown in the figure. 
?A = 45°, 
= 14 km, ?C = 90°
A. 
= 7
km, ?B = 45°, 
= 14 km
B. 
= 14
km, ?B = 45°, 
= 14 km
C. 
= 14 km, ?B = 45°, 
= 14
km
D. 
= 14 km, ?B = 45°, 
= 7
km
Mathematics
If the sequence is geometric, find the common ratio r. If the sequence is not geometric, say so.3, 9, 27, 81, 243
A. 3
B. 9
C. 
D. Not geometric
Mathematics