Posted by dd on .
Find the angle of depression from top of a 500 m long chairlift with a vertical height of100 m

maths methods 
MathMate,
Here height = 100 m.
length of cable = 500
angle of depression, θ = sin^{1}(100/500)
If the length of the chairlift is measured horizontally, then θ would be tan^{1}(100/500)