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The angles of elevation and depression of the top and bottom

of the light house from the top of 60m high pole are 30degree and 60degree.
Find the difference bet. the heights of
the light house. plzz ans to this q.! urgently!


80 m, as the height of the lighthouse will come to  140 m

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Let distance between pole and light house be Y,
tan60=60/Y    Y=20root3
tan 30= 60-x/y  (x is h of light house)
therefore x = 40 
therefore difference of heights is 20 m

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