Write the expression in terms of sines and/or cosines, and then simplify.cot x sin x - tan x cos x
A. cos x - sin x
B. 
C. 
D. 
Answer: A
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Find the vertices of the ellipse.
+ 
= 1
A. (-5, -13), (-5, 3) B. (-5, -11), (-5, 1) C. (-5, -15), (-5, 5) D. (-15, -5), (5, -5)
Determine whether the infinite geometric series converges or diverges. If it converges, find its sum.3 - 1 + 
- ...
A. Converges; - 1
B. Converges; 3
C. Converges; 2
D. Converges; 
For the expression,a) determine the number of terms;b) write down each term; andc) write down the coefficient for each.Be sure to simplify the expression before answering.6a - 7b + 2c - 9(2a + 9b - 9c)
A. a) 3 b) 4a, 2b, -7c c) 4, 2, -7 B. a) 3 b) -12a, -88b, 83c c) -12, -88, 83 C. a) 3 b) -12a, 74b, -79c c) -12, 74, -79 D. a) 3 b) -12a, -16b, 11c c) -12, -16, 11
Solve the problem.When two lenses are placed next to each other, their combined focal length (a measurement that can be negative or positive) is described by the equation f = 
.If f1 = 0.001, what are the asymptotes of this function?
What will be an ideal response?