1.

The vector 2hati+2hatj-hatk makes ………………measure of angles with the axes.

Answer»

`COS^(-1)""(2)/(3),cos^(-1)""(2)/(3),pi-cos^(-1)""(1)/(3)`
`cos^(-1)""(2)/(3),cos^(-1)""(2)/(3),cos^(-1)""(1)/(3)`
`pi-cos^(-1)""(2)/(3),cos^(1)""(2)/(3),pi-cos^(-1)""(1)/(3)`
`cos^(-1)""(2)/(3),pi-cos^(-1)""(2)/(3),cos^(-1)""(1)/(3)`

ANSWER :A


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