1.

If the magnitudes of two vectors are 2 and 3 and magnitude of their scalar product is `2sqrt3` what is the angle between the vectors ?

Answer» `A=2B=3 " "barAbarB=2sqrt3`
`costheta(barAbarB)/(AB)`
`costheta=(vecA.vecB)/(AB)=(2sqrt3)/(2xx3)=(1)/(sqrt3)`
`theta=cos^(-1)((1)/(sqrt3))`


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