find the direction cosines of a line segment joining the points: P(2,-1,3) and Q(3,1,1)
rakeshmohata:
is the answer 1/3, 2/3 and - 2/3
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Ř = ă + t( b - a)
So (B - A) = Č = (3-2 , 1 +1, 1-3) = (1,2,-2)
Direction cosines = Č/|C|
|C| = (1² + 2² + 2²)^½ = 3
Thus it would be,
1/3, 2/3, - 2/3 ans.
Hope I helped you.
So (B - A) = Č = (3-2 , 1 +1, 1-3) = (1,2,-2)
Direction cosines = Č/|C|
|C| = (1² + 2² + 2²)^½ = 3
Thus it would be,
1/3, 2/3, - 2/3 ans.
Hope I helped you.
Answered by
1
yes the same answer. holpe
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