Solve the problem.If cot ? = 6.1, find the value of cot ? + cot (? + ?) + cot (? + 2?).
A. 20.3
B. 18.3 + 3?
C. 18.3
D. undefined
Answer: C
Mathematics
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Solve the problem.A rotating beacon is located 14 ft from a wall. If the distance from the beacon to the point on the wall where the beacon is aimed is given by a = 14|sec 2?t|,where t is in seconds, find a when t = 0.31 seconds. Round your answer to the nearest hundredth.
A. -38.03 ft B. 24.91 ft C. 31.47 ft D. 38.03 ft
Mathematics
Convert as indicated.0.57 km to centimeters
A. 5700 cm B. 5.7 cm C. 57,000 cm D. 570 cm
Mathematics
Solve the equation for x.
= 4
A. {2} B. {4} C. {-2} D. ?
Mathematics
Simplify the radical. Assume that all variables represent nonnegative real numbers. 
A. 4xy
B. 4xy2 
C. 4x2 
D. 4x
Mathematics