Use the product-to-sum identities to rewrite the expression as the sum or difference of two functions.cos 
? sin 
?
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve the problem.For the vectors u and v with magnitudes 
= 5 and 
= 6, find the angle ? between u and v which makes 
= 3
A. 60.00° B. 53.13° C. 33.56° D. 36.87°
Mathematics
Find the area of the region specified in polar coordinates.the region enclosed by the curve r = 5 cos 3?
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Refer to this figure to answer the question. Assume 
and 
are parallel.
Are ?CDA and ?ADE adjacent angles?
A. No B. Yes
Mathematics
Use the quadratic function to determine if the function has a maximum or minimum value and then find this maximum or minimum value.f(x) = 
x2 + 2x - 4
A. minimum at 
B. minimum at 
C. maximum at 
D. maximum at 
Mathematics