1.

Let L _(1) : (x -1)/( 1) = (y+1)/(2) = (z-2)/(2) L _(2) : x - 2y -1 =0 lamda y - z + 2pi : 2x + y-z =0 If the line L_(2) ies in the plane L _(3) then angle between the lines L _(1) , L_(2)

Answer»

`pi//6`
`pi//3`
`COS ^(-1) ((7)/(sqrt35))`
`pi/2`

ANSWER :D


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