Question

A surveyor noted that the angle of elevation of a marker on the top of a hill is 30. He walked 40 meters towards the foot of the hill along the level ground and found the angle of elevation of the marker is 45. How far from surveyor's first position was the marker ?

Answer 1

Answer:

I don't know the answer of this question is that I am Sweety of class VIII and I have submitted the home assignment