Use an identity to write the expression as a single trigonometric function or as a single number.
A. cos 37°
B. tan 37°
C. cot 37°
D. sin 37°
Answer: C
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Solve the problem.If a ball is thrown upward at 19.6 meters per second from the top of a building that is 70 meters high, the height of the ball can be modeled by 
meters, where t is the number of seconds after the ball is thrown. What is the ball's maximum height?
A. 70 m B. 128.8 m C. 84.7 m D. 89.6 m
Convert the length as indicated. Round the answer to two decimal places.1400 meters to miles (meters ?kilometers ? miles)
A. 2.26 mi B. 1.15 mi C. 0.87 mi D. 868000 mi
Find the unit vector that has the same direction as the vector v.v = -8j
A. u = - 
j
B. u = -j
C. u = 64j
D. u = -8j
Write an equation of the line described.Through (-3, -2), parallel to -9x - 2y = 39
A. y = - 
x + 
B. y = - 
x - 
C. y = - 
x - 
D. y = 
x + 