From the top and foot of a tower 40m high, the angle of elevation of the top of a lighthouse is found to be 30° and 60° respectively. Fint the height of the lighthouse. Also fine the distance of the top og of the lighthouse from the foot of the tower.
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AC^2=(60)^2+(60√3)^2
AC^2=3600+10800
AC^2=14400
AC =120m
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