The answer would be A. I just did this yesterday. Do you want the steps?
Answer:
and 
Step-by-step explanation:
Recall that
is a value of the function cosine for the special angles:
and
, then:

Yes, I will list acute first (<90) and obtuse second (>90) and they need to add to 180
10 and 170
20 and 160
30 and 150
40 and 140
50 and 130
60 and 120
70 and 110
80 and 100 and so on
Answer:
6-b
Step-by-step explanation:
I hope this helps, and have a great day! :D
Your answer would be <u>2700</u>
Using I=P*r*t
P= 2500
R= 4% (substitue to 0.04)
T= 2 Years
I= 2500* 0.04 * 2
I= 100* 2
I= 200
2500+200=
2700