Find all solutions of the equation in the interval [0, 2?).cos 2x = 
A. 
B. 
C. ?
D. 
Answer: A
Mathematics
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A lighthouse on an island is located at the origin of a coordinate system. East points to the positive x-axis, and north points to the the positive y-axis. Find the bearing of a ship located at the given point. Round the angle measure to the nearest degree where necessary.(-3, 5)
A. S 59° W B. N 59° W C. N 31° W D. S 31° W
Mathematics
Simplify the exponential expression using the rules for exponents.(x-4y5)-2
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.
What will be an ideal response?
Mathematics
Find the length of the third side of the right triangle. Assume that c represents the length of the hypotenuse. Give an exact answer and, if appropriate, an approximation to three decimal places.a = 30, c = 50
A. b = 10 B. b = 20 C. b = 80 D. b = 40
Mathematics