Raja99
What is DC'S of a unit vector and wat is its use



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experimentX
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how do you write a straight line in 3d?

Raja99
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3i+4j+5k

Raja99
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next

Raja99
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@experimentX hello

experimentX
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do you mean the DC of i,j,k ?

nitz
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@experimentX DC means direction cosines

AravindG
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directional cosines!!

AravindG
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those are l,m and n!

AravindG
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where l^2+m^2+n^2=1

experimentX
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i know ... what do you particularly mean here? 3i+4j+5k is not a unit vector

AravindG
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@Raja99 can you jst clarify that query ?