Express the product as a sum containing only sines or cosines.sin(3?) sin(7?)
A. 
[- cos(4?) - cos(10?)]
B. 
[cos(4?) - cos(10?)]
C. sin2(21?2)
D. 
[cos(10?) - sin(4?)]
Answer: B
Mathematics
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Determine which numbers in the set are irrational numbers.
a. 
b. 
c. 
d. 
e. 
Mathematics
Solve the problem.It took three assembly-line workers 7.25 seconds, 7.495 seconds, and 6.7 seconds to assemble a product. How many seconds in all did they work?
A. 21.445 sec. B. 13.95 sec. C. 14.745 sec. D. 6.945 sec.
Mathematics
Find the area of the region under the graph of the function
?
?
on the interval 
, using the fundamental theorem of calculus. Then verify your result using geometry.
?
A. 14 sq units
B. 13 sq units
C. 12 sq units
D. 9 sq units
Mathematics
Add to get the exact answer.
A. 16,433 B. 16,543 C. 15,443 D. 15,533
Mathematics