Question

the angle of depression of two ship from the top of a light house are 40degree and 30degree towards east if the ships are 200m apart find the height of the lighthouse​

Answer 1

let the height of the lighthouse be AB and distance of the ship from a ship which is 45degree=200m and name the point C

so now in triangle ABC
tan45=AB/BC
1=AB/200
AB=200
height of the tower will be 200m.



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Answer 2

this is your answer substitute and find out
73.2×1.7 +200×1.7 ÷3
=124.44 +340 ÷3
=464.44 /3
= 154.8