<h3>
Answer:</h3>
- left picture (bottom expression): -cot(x)
- right picture (top expression): tan(x)
<h3>
Step-by-step explanation:</h3>
A graphing calculator can show you a graph of each expression, which you can compare to the offered choices.
_____
You can make use of the relations ...
... sin(a)+sin(b) = 2sin((a+b)/2)cos((a-b)/2)
... cos(a)+cos(b) = 2cos((a+b)/2)cos((a-b)/2)
... cos(a)-cos(b) = -2sin((a+b)/2)sin((a-b)/2)
Then you have ...

and ...

Answer:
(0, -4)
rise/run = (-5/1)
x y
1 -9
2 -14
3 -19
4 -24
5 -29
6 -34
Step-by-step explanation:
You're going to have to graph it yourself.
Take the coordinated and just plot the points, then draw the line.
(1,-9)
(2,-14)
(3,-19)
(4,-24)
(5,-29)
(6,-34)
The answer is x<2
-2x^5 + 14x^4 - 36x^3 + 52x^2 - 64x + 48=0