SOLUTION: An aeroplane is flying at a height of 200metre. It's angle of elevation to an observer on the ground is 23°. Calculate the distance of the aeroplane from the observer.

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: An aeroplane is flying at a height of 200metre. It's angle of elevation to an observer on the ground is 23°. Calculate the distance of the aeroplane from the observer.      Log On


   

Question 1206669: An aeroplane is flying at a height of 200metre. It's angle of elevation to an observer on the ground is 23°. Calculate the distance of the aeroplane from the observer.
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Right Triangle
vertical leg 200 metres
horizontal leg not known
Angle at the observer on ground to the aeroplane 23 degrees
Angle at the aeroplane, 67 degrees

You want to calculate length of hypotenuse. h.
200%2Fh=sine%2823%29----------compute h.