Notice the picture below
so.... the angle of depression, is above in dashed lines.... however, the angle of depression, is identical to the angle of elevation from the water, since, both angles are "alternate interior" angles
now, using the 45-45-90 rule, then we know the swimmer is 90 feet from the lighthouse, then just use the tangent ratio to get "x"
Hope this isn't too confusing
1.5 tsp x 800 cakes = 1200 tsp.
1 tsp = 5 ml
1200 x 5 = 6000 ml
1 ml = 0.001 liter
6000 x 0.001 = 6 liters
I Just answered the question it is savings account