If vec aa n d vec b are any two vector...

If ` vec aa n d vec b` are any two vectors of magnitudes 1 and 2, respectively, and `(1-3 vec adot vec b)^2+|2 vec a+ vec b+3( vec axx vec b)|^2=47 ,` then the angel between ` vec aa n d vec b` is `pi//3` b. `pi-cos^(-1)(1//4)` c. `(2pi)/3` d. `cos^(-1)(1//4)`

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If vec aa n d vec b are any two vectors of magnitudes 1 and 2, respectively, and (1-3 vec adot vec b)^2+|2 vec a+ vec b+3( vec axx vec b)|^2=47 , then the angel between vec aa n d vec b is a. pi//3 b. pi-cos^(-1)(1//4) c. (2pi)/3 d. cos^(-1)(1//4)

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If ` vec aa n d vec b` are any two vectors of magnitudes 1 and 2, respectively, and `(1-3 vec adot vec b)^2+|2 vec a+ vec b+3( vec axx vec b)|^2=47 ,` then the angel between ` vec aa n d vec b` is `pi//3` b. `pi-cos^(-1)(1//4)` c. `(2pi)/3` d. `cos^(-1)(1//4)`

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