A jet projected at an angle of 45θ, 40 m from the foot of a vertical column, just reaches the top of the column. The height of the column is

A jet projected at an angle of 45θ, 40 m from the foot of a vertical

1.	A jet projected at an angle of 45θ, 40 m from the foot of a vertical column, just reaches the top of the column. The height of the column is
A.	15 m
B.	20 m
C.	30 m
D.	40 m
Answer» E.