Q9
Inthe following problems, determine whether the given planes are parallel or perpendicular and in case they are neither, find the (acute) angle between them:

(i) 2x+y+3z-2=0 and x-2y+5=0
(ii) 4x + 8y+z-8=0 and y+z-4=0
(iil) 7x + 5y + 6z + 30 =0 and 3x-y- 10z+4=0
(iv) 2x - 2y + 4z +5 = 0 and 3x -3y +6z-1=0

Solution

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