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| newspaper |
 Posted: Wed Jul 16, 2008 9:50 am Post subject: dot product |
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Forum Freshman
Joined: 06 Jun 2007
Posts: 36
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Well, Everybody knows that a.b = |a||b|cos(theta) and we have been learning it since school days. I am student and and i just wanted to know how it is derived. I mean i just wanted to check if my concept of the proof which i have solved is matching.
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| MagiMaster |
| Posted: Wed Jul 16, 2008 10:36 am Post subject: |
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Forum Bachelors Degree
Joined: 16 Jul 2006
Posts: 427
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| This may be too much information at once, but it is explained on the MathWorld entry for Dot Product. Someone else on this site might be able to give a simpler explanation though. |
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| rgba |
| Posted: Wed Jul 16, 2008 2:55 pm Post subject: |
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Forum Freshman
Joined: 04 Jan 2008
Posts: 40
Location: Cape Town
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hey, im really interested in this as well... could someone explain a little simpler maybe... as i asked in my last post, i'm sure its all related to understanding how the trig functions work...
but basically the dot product is a projection... that's as much as i know...
but hey, would love to hear a little more on this  |
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| newspaper |
| Posted: Wed Jul 16, 2008 7:33 pm Post subject: |
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Forum Freshman
Joined: 06 Jun 2007
Posts: 36
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| MagiMaster wrote: |
| This may be too much information at once, but it is explained on the MathWorld entry for Dot Product. Someone else on this site might be able to give a simpler explanation though. |
Thanxs MagiMaster it was really cool. it was what i expected.
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| MagiMaster |
| Posted: Wed Jul 16, 2008 9:16 pm Post subject: |
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Forum Bachelors Degree
Joined: 16 Jul 2006
Posts: 427
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| No problem. Between MathWorld and Wikipedia, you can usually find a pretty good (if sometimes overly technical) answer to almost any basic math question (and a lot of more advanced ones too). |
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