Asked by Jackson gift
                Draw a sketch in each question leave the answer in surd form with rational denominator 
From the top of a tower, the angle of depression of a boat is 30degree. If the tower is 20m high how far is the boat from the foot of the tower
            
        From the top of a tower, the angle of depression of a boat is 30degree. If the tower is 20m high how far is the boat from the foot of the tower
Answers
                    Answered by
            oobleck
            
    if you drew the sketch, and reviewed your basic trig functions, you can see that
20/x = tan30°
    
20/x = tan30°
                    Answered by
            mathhelper
            
    Make a sketch and using the basic trig ratios, which you MUST learn, .....
x/20 = tan30° , where x is the distance between the boat and the tower along the horizontal.
= 20tan30° = .....
    
x/20 = tan30° , where x is the distance between the boat and the tower along the horizontal.
= 20tan30° = .....
                    Answered by
            mathhelper
            
    oops, read the angle wrong, 
use oobleck's solution
    
use oobleck's solution
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