Use the information given about the angle ? to find the exact value of the indicated trigonometric function.cot ? = -3, sec ? > 0Find cos 
.
A. -
B. 
C. 
D. -
Answer: A
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Solve the problem.Let f(x,y) = ln (x2 + y2). Which one of the following curves is a simple closed path in the domain of the function f?
A. The unit circle x2 + y2 = 1
B. The ellipse 
+ 
= 1
C. The rectangle with vertices at (-3, 2), (3, 2), (3, -2), and (-3, -2)
D. The unit circle (x - 5)2 + y2 = 1
(2 + j3)(3 + j2) =
a. 13 + j0 b. 6 - j13 c. 1 + j7 d. 0 + j13 e. 6 + j13
Write the proportion.$45 is to 54 bottles as $40 is to 48 bottles
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Solve the problem.Tom and Larry are food inspectors at a cookie making company. Tom tests every 20th batch of dough for fat percentage. Larry tests every 28th batch of dough for carbohydrate percentage. If they both start working at the same time, which batch will be the first that they both test?
A. The 140th batch B. The 280th batch C. The 70th batch D. The 35th batch