Statue

On the pedestal high 4 m is statue 2.7 m high. At what distance from the statue must observer stand to see it in maximum viewing angle? Distance from the eye of the observer from the ground is 1.7 m.

Correct result:

x =  3.39 m

Solution:

α(x)=arctan4+2.71.7xarctan41.7x α(x)=arctan5xarctan2.3x  α(x)=5x2+25+2.3x2+5.29  α(x)=0  5x2+25=2.3x2+5.29  x=52.3=3.39 m



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