Observation tower

From the observation tower at a height of 105 m above sea level, the ship is aimed at a depth angle of 1° 49´. How far is the ship from the base of the tower?

Correct result:

x =  198.6954 km


h=105 m A=1/60+49/3600=10936000.0303  tanA=h:x  x1=h/tanA=h/tan0.0302777777778 =105/tan0.0302777777778 =105/0.000528=198695.43706  x=x1 km=x1/1000  km=198695.4371/1000  km=198.695 km=198.6954 km

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