Question

suppose two lines l1 ad l2 are parallel to vectors i+j and i-2j +k then find angle between l1 and l2?

Answer 1

@Nnesha

Answer 2

@ganeshie8

Answer 3

@hari5719

Answer 4

@RANE

Answer 5

Please note that, using an orthogonal coordinate system, we can write:
\[i+j=(1,1,0),\quad i-2j+k=(1,-2,1)\] so please use the canonical scalar product, in order to find the cosine function of the angle enclosed between your lines

Answer 6

understood nothing

Answer 7

If we have two vectors, namely a and b, we can know the angle theta enclosed by them using the subsequent formula:
\[\cos \theta =\frac{ a \cdot b }{ |a||b| }\]
where |a|, and |b| are the lengths of vectors a and b respectively

Answer 8

ok.thanks

Answer 9

thanks