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"
Really night what's the problem
Word form But I think it can be written in both
0.33%
= 0.33/100
= (33/100) / 100
= 33/(100*100)
= 33 / 10000 In its simplest form.