physic you sure
posted by gabe .
in the distance you see an arch 192 meters high, you estimate your line of sight with the top of the arch to be 8.4 degree. appox how far in kilometers are you from the base of the arch?
tan8.40.192/d? is this the complete answer?

physic you sure 
Reiny
Damon answered your question and even gave you the equation to solve.
tan 8.4 = 0.192/d
was that equation, not what you typed above.
Your question is based on trigonometry. If you are studying trig, then surely you must have learned how to solve simple equations.
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