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A car A going north-east at 80km//h and ...

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))`

Text Solution

Verified by Experts

The correct Answer is:
B
`intvec(B).dl=mu_(0)Sigmai=4pixx10^(-7)(-1+5-3)=4pixx10^(-7)Tm`
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