Find the angle between the following pa...

Find the angle between the following pair of lines: (i) `(x-2)/2=(y-1)/5=(z+3)/(-3)`and `(x+2)/(-1)=(y-4)/8=(z-5)/4`(ii) `x/2=y/2=z/1`and `(x-5)/4=(y-2)/1=(z-3)/8`

`cos^(-1)((21)/(9sqrt(38)))`

`cos^(-1)((23)/(9sqrt(38)))`

`cos^(-1)((24)/(9sqrt(38)))`

`cos^(-1)((26)/(9sqrt(38)))`

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