Solve.An airplane is flying east at an altitude of 36,384 feet. Another plane is flying northeast at an altitude of 31,939 feet. How much above the 
plane is the 
plane when their paths cross?
A. 4415 feet
B. 4375 feet
C. 4645 feet
D. 4445 feet
Answer: D
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Write the expression in terms of sines and/or cosines, and then simplify.
A. 
B. 
C. 
D. cos x - sin x
Refer to the weighted voting system 
and the Shapley-Shubik definition of power. (The four players will be called P1, P2, P3, and P4.)The number of sequential coalitions is
A. 16. B. 24. C. 6. D. 31. E. none of these
Solve the problem.A rectangular flower bed is 
yd long by 
yd wide. Corrugated edging is to be added around all sides of the flower bed. Use the formula 
to determine the length of the edging.
A. 
yd
B. 3 yd
C. 18 yd
D. 
yd
Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.tan 720°
A. 
B. 0
C. -1
D. undefined