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The direction cosines of the line joining the points (2, -1, 8) and (-4, -3, 5) are:
- a)
- b)
- c)
- d)
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
The direction cosines of the line joining the points (2, -1, 8) and (-...
Pt. A(2, -1, 8)
Pt. B(-4, -3, 5)
Direction Ratio DR of AB : ( -4-2 , -3+1 , 5-8 )
: (-6,-2,-3)
Direction cosine of AB : ( -6/(62+22+32)1/2 , -2/(62+22+32)1/2 , -3/(62+22+32)1/2)
: ( -6/7, -2/7, -3/7)
Pt. B(-4, -3, 5)
Direction Ratio DR of AB : ( -4-2 , -3+1 , 5-8 )
: (-6,-2,-3)
Direction cosine of AB : ( -6/(62+22+32)1/2 , -2/(62+22+32)1/2 , -3/(62+22+32)1/2)
: ( -6/7, -2/7, -3/7)
Most Upvoted Answer
The direction cosines of the line joining the points (2, -1, 8) and (-...
Option (b) is correctLet A(2,-1,8) &
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The direction cosines of the line joining the points (2, -1, 8) and (-...
Both B and D are right...(Based on the positive and negative axes)
Use the Formula,
DC's => (X2-X1, Y2-Y1, Z2-Z1) /√[(X2-X1, Y2-Y1, Z2-Z1)^2]
Use the Formula,
DC's => (X2-X1, Y2-Y1, Z2-Z1) /√[(X2-X1, Y2-Y1, Z2-Z1)^2]
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The direction cosines of the line joining the points (2, -1, 8) and (-4, -3, 5) are:a)b)c)d)Correct answer is option 'B'. Can you explain this answer?
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The direction cosines of the line joining the points (2, -1, 8) and (-4, -3, 5) are:a)b)c)d)Correct answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The direction cosines of the line joining the points (2, -1, 8) and (-4, -3, 5) are:a)b)c)d)Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The direction cosines of the line joining the points (2, -1, 8) and (-4, -3, 5) are:a)b)c)d)Correct answer is option 'B'. Can you explain this answer?.
The direction cosines of the line joining the points (2, -1, 8) and (-4, -3, 5) are:a)b)c)d)Correct answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The direction cosines of the line joining the points (2, -1, 8) and (-4, -3, 5) are:a)b)c)d)Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The direction cosines of the line joining the points (2, -1, 8) and (-4, -3, 5) are:a)b)c)d)Correct answer is option 'B'. Can you explain this answer?.
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