Solve the problem.If a ladder is carried horizontally around a corner from a hall A feet wide into a hall B feet wide, the length of the longest ladder that can turn the corner can be determined by first solving the equation 
Solve this equation for ?.
A. ? = tan-1 
B. ? = tan-1 
C. ? = tan-1 
D. ? = tan-1 
Answer: A
Mathematics
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Solve the problem.Bob recently reduced the price of his car to $17,907. If this represents a $2171 decrease in price, what was the price before the decrease?
A. $20,078 B. $37,985 C. $36,985 D. $2071
Mathematics
Approximate the value of the expression to 2 decimal places.sin-1 
in radians
A. -7.18 B. -0.13 C. 1.70 D. 97.18
Mathematics
Before the parachute opens, the velocity v (in meters per second) of a skydiver is given by 
, where t is time in seconds into the jump. Find the velocity after 18 seconds. Round to two decimal places.
?
A. 0.97 m/sec B. 48.63 m/sec C. 9.06 m/sec D. 45.88 m/sec E. 1.37 m/sec
Mathematics
Sketch the graph of the given equation over the interval [-2?, 2?].y = cos x - 2 
A. 
B. 
C. 
D. 
Mathematics