#1
Divide into two rectangles


#2

#3

Answer: theres no pic?
Step-by-step explanation:
Answer:
1/2
Solution: plugging in the given information into the formula you get 2/4 which simplifies to 1/2
Answer:
11 is correct
12 should be 51°
Step-by-step explanation:
15/sin(104) = 12/sin(J)
J = 50.917°
1:4 is equal to 2:8, it's a simplified version.