Answer: 
Step-by-step explanation:
Given
Two forces of 9 and 13 lbs acts
angle to each other
The resultant of the two forces is given by

Insert the values

Resultant makes an angle of

So, the resultant makes an angle of
with 9 lb force
Angle made with 13 lb force is 
Answer:
1: 6
2: The initial amount of water in the fountain
3: The amout of water in the fountain over an amount of time
4: y= 3/2x+6
Step-by-step explanation:
Answer:
a) The number of students who enjoy reading only.
Answer: D or y= 4/3+ 18
Step-by-step explanation:
I hope this helps you
cotx =cosx/sinx
cotx=0,85/0,52
cotx=85/52
cotx=1,6