find the coordinates of the point p on the line L1

Question

ksaimouli · Answer

attachment

anonymous · Answer

What is L2? Could you maybe draw a clearer picture?

ksaimouli · Answer

the figure shows a line L1 in space and a second line L2, which is projection of L1 on xy plane

ksaimouli · Answer

http://www34.homepage.villanova.edu/robert.jantzen/courses/mat2500/handouts/stewart6e_12-1.pdf

ksaimouli · Answer

pg 770 chp- 12, problem 37

ksaimouli · Answer

@hartnn

ksaimouli · Answer

in pdf it is last page

ksaimouli · Answer

This is something to do with projections

anonymous · Answer

okay, so first take a rule and go straight down from p all the way to L2.  The intersection point will give you x, y coords.

anonymous · Answer

then take a ruler from the origin to the projection of P.  Keep the angle the same as you slide it up to P itself.  Then the intersection with the z axis should be the z coord.

ksaimouli · Answer

for x,y coords z=0 so (x,4,0) right

ksaimouli · Answer

@wio " The intersection point will give you x, y coords" what point did u get, I got z=0, y=4 how to get x?

anonymous · Answer

It won't get you the z coord, since know projecting it messes with the z coord.
It will only get you x and y                 like I said.  Start at the point P and move parallel to the z axis (straight down) until you hit L2.  Then look at only the xy place to find the coords.

ksaimouli · Answer

i got (2,1)

anonymous · Answer

Now you measure the distance from the intersection to P,   then measure the z axis to see how many units it will be.

ksaimouli · Answer

I didn't get that @wio I got stuck here|dw:1391103742633:dw|
can u draw on that plz

anonymous · Answer

|dw:1391124327069:dw|

ksaimouli · Answer

ohhh, but why cross why not straight|dw:1391132958616:dw|