The angle of elevation of the top of a pole from man is 60°. When the man moves 30 meters away, the angle of elevation changes to 45°, then what is the initial distance of man from the base of pole?
1
30(√3 + 1) meter
2
15(√3 + 1) meter
3
30(√3 – 1) meter
4
15(√3 – 1) meter