Find the angle of depression of a swimming pool => has 20 meters long => has 12 meters wide => it is slanted at 1.3 meters depth => has 4 meters at the deep end. Now, let’s start finding the tan: => tan x = oop/adj => tan x = 4 -1.3/20 => 0.135 => x = tan-1 0.135, this is equals to approximately 7.69 degrees. Thus the angle of depression is approximately 7.69 degrees