Important Formulas - Height and Distance. Th adjacent side hypotenuse x r. An observer 15 m tall is 205 m away from a tower 22 m high.
And in right D BTO t a n 60 O T A O 30 y.
If a pole 6 m high casts a shadow 23 m long on the ground find the Suns elevation. However in some scenarios you can also use a spotter with a scope so that can be a pretty long way beyond the Mk1 eyeballs range. If so thats basic trig - calculating the hypoteneuse of a right angled triangle. The vectors vx vy and v all form a right triangle.