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Find point PP that belongs to the line and direction vector vv of the line. Express...

Find point PP that belongs to the line and direction vector vv of the line. Express vv in component form. Find the distance from the origin to line L. 251. x=1+t,y=3+t,z=5+4t,x=1+t,y=3+t,z=5+4t, t∈R answers are

a- P=(1,3,5) V=<1,1,4> b. Square root of 3

I want all work shown please. I do not understand how to get root 3

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