Question

christopher sees a bird in a tree at an angle of elevation of 50 degree. After walking 30 feet further from the tree, he views the bird at an angle of elevation of 35 degree. how high in the tree, to the nearest tenth of a foot, is the bird sitting?

Answer 1

draw a diagram.
study your basic trig functions.
You can see hat if the height is h, then
h cot35° - h cot50° = 30
Now just solve for h