Answer:
1.7059
Step-by-step explanation:

Answer:
cos(x) = ???
so the maximum cosine can be is 1 and that happens when x = 0
I'm pretty sure that's what you meant...
121/400 is already in simplest form.
Answer: 6
Step-by-step explanation:
A'B' = AB, and B'C' = BC. So A = (1/2)(3)(4)=6.