A pole of height 4 m is fixed on the top of a tower. The angle of elevation of the top of the pole as observed from a point on the ground is 60o and the angle of depression of the same point from the top of the tower is 45°. The height (in m) of the tower is:
1
2 (\( \sqrt{3} \) +1)
2
2(2\( \sqrt{3} \) - 1)
3
2\( \sqrt{3} \) + 1
4
\( \sqrt{3} \) + 2