Answer:
The radio for the 1st : 1:3
1:3
The 2nd is : C, È, B
The 3rd is : $7.00
Step-by-step explanation:
sin(90-a)=cos
cos = angle adjacent
theta=BC/CA
c
1/(1/2)
2
y=2
B
I'm super lazy rn and it doesn't need explanation
Answer:D