Question

An observer on the ground at point A watches a rocket ascend. The observer is 1200 feet from the launch point B. As the rocket rises, the distance d from the observer to the rocket increases. a. Express the measure of angle A in terms of d.

Answer 1

have you drawn a diagram?

Answer 2

yeah, i just dont know how to write the measure of angle a in terms of d

Answer 3

with trig functions

Answer 4

yeah, i understand that i just dont know how im supposed to write the answer in terms of d

Answer 5

well if your at A and you have the adjacent side you will use cosA=1200/d
which would be d=1200/cosA

Answer 6

ok, i see, thanks

Answer 7

no problem