If ABC line passes through the base of the tower O, and CO = x, then
cotα = (2d + x)/h
cotβ = (d+x)/h and
cotγ = x/h.
Now see what is (cotα + cotγ) =
are the angles of the top of a vertical tower from three distinct points A, B, and C, on a horizontal line that is on the same level as the base of the tower but does not necessarily pass through it. The distances AB=BC=d. Prove that the height h of the tower is given by
If , prove that the line ABC passes through the base of the tower.
I have already shown the h is given by , but i don't how to prove that if the line passes through the base of the tower.
Thanks for any help!