From a given position an observer notes that at the angle of elevation of a rock is 47 degrees. After walking 1000 feet towards the rock, up a slope of 32 degrees, he finds the angle of elevation to be 75 degrees. find the vertical distance of the rock above each point of observation.
My answer (please check if I am correct)
At 47 degrees: the rock is 1252.797 ft high
At 75 degrees: the rock is 627.928 ft high