Write the product as a sum or difference of trigonometric functions.cos 38° sin 23°
A. 
(sin 61° + sin 15°)
B. 
(sin 61° - sin 15°)
C. 
(cos 61° + cos 15°)
D. 
(cos 61° - cos 15°)
Answer: B
Mathematics
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Solve.Find the area under the curve 
from 
to x = 
.
A. 
B. 
C. 
D. 
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Simplify the rational expression.
A. -23mp
B. - 
C. -23m4p2
D. - 
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The graph of 
is given in the figure. State whether 
or 
A. a < 0 B. a > 0
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