Verify the identity.sin 
= cos ?
What will be an ideal response?
sin 
= sin ? cos 
+ sin 
cos ? = (sin ?)(0) + (1)(cos ?) = cos ?.
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Solve the problem. If necessary, round your result to the nearest tenth unless instructed differently. The precise value of your approximation may depend on the conversion path that you choose.Jessica bought a 2 liter bottle of cola for her party. She estimates that the guests will drink a total of 20 cups of cola. How many more cups of cola will she need? Round your result to the nearest cup.
A. 16 c B. 41 c C. 12 c D. 101 c
Sketch the graph of f(x). Determine the domain, range, and the equation of the horizontal asymptote of the function.f(x) = -e-x + 5
A. Domain: (-?, ?), range: (-?, 0)
Horizontal asymptote: y = 0
B. Domain: (-?, ?), range: (-?, 5)
Horizontal asymptote: y = 5
C. Domain: (-?, ?), range: (-?, 5)
Horizontal asymptote: y = 5
D. Domain: (-?, ?), range: (5, ?)
Horizontal asymptote: y = 5
If é = 39.5 and a = 3.9, find c.
a. 2.48
b. 4.29
c. 6.13
d. 7.09
e. 8.49
Factor the trinomial completely, or state that the trinomial is prime.9x2 - x - 38
A. (9x + 19)(x - 2) B. (9x + 2)(x - 19) C. (9x - 2)(x + 19) D. (9x - 19)(x + 2)