Simplify the given expression by giving the results in terms of one-half the given angle. Then use a calculator to verify the result.
A. 0.891
B. 0.642
C. 1.782
D. 1.2601
Answer: D
Mathematics
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Change the order of integration and evaluate the integral.
A. 
?2
B. 
?2
C. 
?2
D. 
?2
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Graph the function.f(x) = -2x(x + 1)(x + 2)
A. 
B. 
C. 
D. 
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Solve the problem.A cross-country skier reaches the 12-km mark of a race 40 min after reaching the 
mark. Find the speed of the skier.
A. 20 km/hr B. 10 km/hr C. 15 km/hr D. 18 km/hr
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Find the quantity if v = 5i - 7j and w = 3i + 2j.
+ 
A. 2
+ 
B. 
C. 
+ 
D. 
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