3 - Vector and 3 D Questions Answers
Is area always a vector quantity or it can be a vector quantity?
Asked By: AMIT DAS
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Joshi sir comment
generally it is scalar but in the measurement of flux through a surface it is considered a vector perpendicular to the surface with same magnitude
line AB intersects CD internally in the ratio K : 1 where K is undefined , these line may be ( 1) concurrent , (2) intersecting , (3) skew < (4) all of these . explain plese ?
Asked By: SHUBHAM VED
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Joshi sir comment
I think it will be skew because skew lines do not intersect in real points
show that line perpendicular to x-axis and a line perpendecular to y-axis having slope multipication -1
Asked By: HARISH
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Joshi sir comment
Angle between two lines is given by the formula
tanθ = (m1-m2)/(1+m1m2)
solve this by taking θ = 90