Asked by Cute girl
                From a point P on the ground the angles of elevation of the top of the building and of a helicopter, hovering at some height over the top of the building, are 30 degree and 60 degree, respectively. Find the height of the helicopter above the ground 
            
            
        Answers
                    Answered by
            Steve
            
    draw a diagram.
If the building has height h, and
the chopper is x above the building
h cot60° = (h+x)cot30°
Both of these are equal to the distance of P from the building. Once you have that, you can find h and x.
Without knowing that or h, you cannot find x.
    
If the building has height h, and
the chopper is x above the building
h cot60° = (h+x)cot30°
Both of these are equal to the distance of P from the building. Once you have that, you can find h and x.
Without knowing that or h, you cannot find x.
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