Use the information given about the angle ?, to find the exact value of the indicated trigonometric function.sin ? = - 
, ? in quadrant IV Find cos 2?.
A. 
B. - 
C. - 
D. 
Answer: B
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Solve the problem.A conical tank is resting on its apex. The height of the tank is 
, and the radius of its top is 
. The tank is full of gasoline weighing
How much work will it take to pump the gasoline to the top? Give your answer to the nearest ft ? lb.
A. 18,473 ft ? lb B. 4,033,713 ft ? lb C. 147,781 ft ? lb D. 337,784 ft ? lb
Solve the problem.Rafael makes labels for a major distributor. He is paid $0.70 for each label and records the following number of completed labels: Monday, 76; Tuesday, 84; Wednesday, 111; Thursday, 106; Friday, 121. How much will he be paid for his work for the week?
A. $347.90 B. $349.30 C. $263.90 D. $348.60
Solve the problem.Find the value for x in the following special right triangle. Use exact values. 
4 in.
A. 16 in.
B. 2 in.
C. 4
in.
D. 4 in.
Use a calculator to evaluate the expression. 
A. 36,814,536 B. 1,533,939 C. 184,072,680 D. 3,067,878