The rescue helicopter

The rescue helicopter is above the landing site at a height of 180m. The site of the rescue operation can be seen from here at a depth angle of 52° 40 '. How far will the helicopter land from the rescue site?

Correct result:

x =  137 m


y=180 m A=52+40/60=158352.6667  tanA=y:x  x=y/tanA=y/tan52.666666666667 =180/tan52.666666666667 =180/1.311105=137=137 m

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