1.

A force of (2 hat(i) + hat(j) + 2hat(k))N is acting on a body, shifted it from (1, 2,0) to (2, 3,4) in the same frame of reference Angle between the displacement and force

Answer»

`"COS"^(-1) (11)/(9 sqrt2)`
`cos SQRT((48)/(54))`
`SIN^(-1) sqrt((25)/(54))`
`tan sqrt((48)/(54))`

Answer :A


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