Answer:
Step-by-step explanation:
The unit circle has the parametric equation:
where 
in our case is the terminal side of the angle in standard position.
We substitute to get:
is the required point.
x/.75=x-56/0.4
0.4x=.75x-42
-0.35x=-42
x=120
I set up a proportion in which x=the tank when it is 3/4 full. When the tank is 3/4 full, solving the proportion tells us the x=120 litres. 120/3=40, and 120+40 is 160, showing that a tank completely full would indeed hold 160 litres.
Hope this helps!
X=1 is the answer to your question
They are both parallelograms because the sides are parallel to one another
It would be:1/x = 1/40+1/52 = 13+10/520 = 23/520
x = 520/23 = 22.60 minutes
