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Question
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?
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?
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Solution
The correct option is C 1 only
point P(−2,1,−5) in the plane 3x−2y+2z+1=0.So the items follows will be coordinates of Q, so direction ratio will be for line segment PQ i.e. the direction ratio of line segment PQ will be <3,−2,2>Thus only 1 follows
point P(−2,1,−5) in the plane 3x−2y+2z+1=0.
So the items follows will be coordinates of Q, so direction ratio will be for line segment PQ
i.e. the direction ratio of line segment PQ will be <3,−2,2>
Thus only 1 follows
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