Ask your own question, for FREE!
Mathematics 7 Online
OpenStudy (anonymous):

3D Geometry Question

OpenStudy (anonymous):

Question attached.

OpenStudy (anonymous):

Ive worked it out on my own and for some reason i am getting a length of side BC that is 4.47 yet it is not correct

OpenStudy (anonymous):

Im sure I can figure this all out, the question tho is what coordinates are you seeing here in terms of xyz

OpenStudy (ranga):

Can you find the (x,y,z) coordinates of each of the points A, B and C?

OpenStudy (anonymous):

yeah what i had for a was 1,1,1 b was 3,5,4 and c was 3,5,0

OpenStudy (ranga):

A & B lie on the y-z plane.

OpenStudy (anonymous):

so when i take the magnitude i get the following root (3-3)^2 + (5-5)^2 + (0-4)^2 which equated to 4 but i know this is not right just by looking at things. Or because they share the plane it has to be solved another way

OpenStudy (anonymous):

but the range is 5.39

OpenStudy (anonymous):

Damn I did a dumb mistake. fixing: To tell the truth... I can't be sure either. But, the way i see it they must supply all coordinates for all points. And since every point has only 2 explicit coordinates in there, it seems they all touch planes. so I would say A = (0, 1, 1) B = (0, 3, 4) C= (3, 5, 0)

OpenStudy (ranga):

@k1dj03y Your A, B & C coordinates are wrong. Points A & B lie on the y-z plane and therefore their x-coordinates are 0. Try coordinates of A, B & C again.

OpenStudy (anonymous):

ok so your taking it as a is back on the x plan then because why? they are not defining it along the x axis?

OpenStudy (anonymous):

and same reasoning with b i suppose as well. Because its not being boxed out for the diagram it can be thought of as not sticking out

OpenStudy (ranga):

Yes. There is no x-xordinates for A & B. What pitamar posted above are the correct coordinates for A, B & C.

OpenStudy (anonymous):

gotcha and yeah then the numbers check out like they should

OpenStudy (ranga):

cool.

OpenStudy (anonymous):

Take it back.. I don't deserve it =|

OpenStudy (anonymous):

thx again and this stuffs a pain in the retricewhen trying to imagine on paper so ill have to keep the boxed in thing in mind when looking at them

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!