Find the amplitude, period or phase shift.Find the period of y = -5 cos 
.
A. 6?
B. 3?
C. 5?
D. 
Answer: A
Mathematics
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Solve the problem.Find the area of the region enclosed by the curve y = x cos x and the x-axis for 
? ? x ? 
?.
A. 9 B. 11? C. 9? D. 10?
Mathematics
An observer for a radar station is located at the origin of a coordinate system. For the point given, find the bearing of an airplane located at that point. Express the bearing using both methods.(6, 6)
A. 45°; N 45° E B. 45°; S 45° E C. 45°; S 45° W D. 45°; N 45° W
Mathematics
The rectangular coordinates of a point are given. Express the point in polar coordinates with 
and 
A. 
B. 
C. 
D. 
Mathematics
Use the given information given to find the exact value of the trigonometric function.cos ? = 
, csc ? > 0Find sin 
.
A. 
B. 
C. 
D. 
Mathematics