Answer: 40km/h
Step-by-step explanation:
distance = 20km
time = 30 min conver to hours. 
velocity = ?


Answers are like this: 1)Cos C 2)Cos B 3)Cos A 4)a 5)b 6)c all of them are different type of writing cosines law , just this.
It can lower or higher it making it easyer
This can be easily figured out. Check to see what points are on the bottom and that is your answer.
B
Answer:
no, it does not format a proportion, they are not equal