1.

A car `A` going north-east at `80km//h` and another car `B` is going south-east at `60km//h.` The direction of the velocity of `A` relative to `B` makes an angle with the north equal to:A. `tan^(-1)((2)/(7))`B. `tan^(-1)((7)/(2))`C. `tan^(-1)(7)`D. `tan^(-1)((1)/(7))`

Answer» Correct Answer - B
`intvec(B).dl=mu_(0)Sigmai=4pixx10^(-7)(-1+5-3)=4pixx10^(-7)Tm`


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