Use a half-angle formula to find the exact value of the expression.tan 165°
A. -
+ 2
B. -
- 2
C. 
- 2
D. 
+ 2
Answer: C
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Use a CAS integration utility to evaluate the triple integral of the given function over the specified solid region.
over the cylinder bounded by 
and the planes 
, 
A. 
?
B. 
?
C. 
?
D. 
?
Graph a line that is perpendicular to the given line and passes through the given point.
A. 
B. 
C. 
D. 
Solve the problem.The weight of a body above the surface of the earth is inversely proportional to the square of its distance from the center of the earth. What is the effect on the weight when the distance is multiplied by 2?
A. The weight is divided by 4. B. The weight is multiplied by 4. C. The weight is multiplied by 2. D. The weight is divided by 2.
Find the indicated sum. Use the formula for the sum of the first n terms of a geometric sequence.
A. 480 B. 2460 C. 1452 D. 93