Use a product-to-sum identity to rewrite the expression.cos 34° cos 19°
A. 0.5(cos (15°) - cos(53°))
B. 0.5(sin (15°) + sin(53°))
C. 0.5(cos (15°) + cos(53°))
D. 0.5(sin(53°) - sin (15°))
Answer: C
Mathematics
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For the function f whose graph is given, determine the limit.Find
f(x).
A. -4 B. 4 C. does not exist D. 0
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Graph the function.
?
?
A. 
B. 
?
?
C.
D.
?
?
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Solve the problem.Let A = 
and B = 
. Find 2A - 4B.
A. 
B. 
C. 
D. 
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Simplify.-?-20?
A. 40 B. 0 C. -20 D. 20
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