1.

Let the palanes, P _(1) : 2x - y + z =2 and P _(2) : x + 2y -z =3 are given, On the bases of the above information, Answer the following questions The equation of the acute angle bisector of planes P _(1) and P _(2) is

Answer»

`X - 3y + 2z +1=0`
`3X + y- 5=0`
`x + 3y - 2z + 1=0`
``3x + z + 7 =0`

Answer :A


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