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NDA Math Three Dimensional Geometry

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Consider the following for the next two (02) items that follow:
Let Q be the image of the point P(−2,1,−5) in the plane 3x−2y+2z+1=0

[NDA II 2016]

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Question : 53

Total: 92

Consider the following:
1. The direction ratios of the line segment PQ are <3,−2,2>.
2. The sum of the squares of direction cosines of the line segment PQ is unity.
Which of the above statements is/are correct ?

1 only
2 only
Both land 2
Neither 1 nor 2

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