A vector makes angle with X,Y and Z axer that are in the ratio 1:2:1 respectively. The angle made by the vector with Y-axis is

A vector makes angle with X,Y and Z axer that are in the ratio 1:2:1 r

1.	A vector makes angle with X,Y and Z axer that are in the ratio 1:2:1 respectively. The angle made by the vector with Y-axis is
Answer» ANSWER :`pi/2`