Use the Half-angle Formulas to find the exact value of the trigonometric function. tan 
A. -1 + 
B. -1 - 
C. 1 + 
D. 1 - 
Answer: D
Mathematics
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Solve the problem.The shape and density of a thin shell are indicated below. Find the moment of inertia about the z-axis.Shell: "nose" of the paraboloid x2 + y2 = 2z cut by the plane z = 1Density: ? = 
A. Iz = 
?
B. Iz = 
?
C. Iz = 16?
D. Iz = 2?
Mathematics
Answer the question about percent. Round to the nearest hundredth where necessary.What is 20% of 600?
A. 12 B. 1200 C. 120 D. 1.2
Mathematics
Evaluate the expression according to the replacement value given.8a - 2b; replace a with 9 and b with 5.
A. 82 B. 67 C. 62 D. 70
Mathematics
Find the limit.
A. 1 B. -? C. 0 D. ?
Mathematics