Evaluate without using a calculator by using ratios in a reference triangle.tan (- 
)
A. 
B. - 
C. - 
D. 
Answer: D
Mathematics
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Solve the problem.Two forces, F1 of magnitude 35 newtons (N) and F2 of magnitude 55 newtons, act on an object at angles of 
and 
(respectively) with the positive x-axis. Find the direction and magnitude of the resultant force; that is, find 
Round the direction and magnitude to two decimal places.
What will be an ideal response?
Mathematics
Find the length of the curve r(t) = -2ti-tj+tk, -2?t?1.
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Mathematics
Use the LCD to simplify and solve.
(r + 6) = 
(r + 8)
A. 3 B. -4 C. 4 D. 6
Mathematics
Solve the problem.Find the distance in kilometers between the cities whose latitudes are given. Assume that the cities are on a north-south line and that the radius of the earth is 6400 km. City E, 10°N and city F, 62°S
A. 8050 km B. 5808 km C. 5800 km D. 8042 km
Mathematics