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Excuse me, please
3 vectors (they are not 0), a=5 b=3
the angle between a and b is 60
to balance , c=?
 one year ago
 one year ago
Excuse me, please 3 vectors (they are not 0), a=5 b=3 the angle between a and b is 60 to balance , c=?
 one year ago
 one year ago

This Question is Closed

ranxu6j3Best ResponseYou've already chosen the best response.0
dw:1361102188359:dw
 one year ago

ranxu6j3Best ResponseYou've already chosen the best response.0
@ParthKohli can you help?
 one year ago

ParthKohliBest ResponseYou've already chosen the best response.0
No, I am not wellversed in vectors :(
 one year ago

ZeHanzBest ResponseYou've already chosen the best response.1
Try putting a coordinate system on it, with a or b as one of the axes. Let's say b is the negative xaxis. Then you can write a as the sum of its x and ycomponents. I will make a drawing to explain...
 one year ago

ranxu6j3Best ResponseYou've already chosen the best response.0
thanks @ParthKohli , cuz there was nobody viewing, and I'm your fan, so I tried to ask you. that's alright, thanks for replying
 one year ago

ranxu6j3Best ResponseYou've already chosen the best response.0
thanks , @ZeHanz , I'll wait for your illustration.
 one year ago

ZeHanzBest ResponseYou've already chosen the best response.1
Here it is: (try to get the lengths of a_x and a_y, the x and y components of a.
 one year ago

ZeHanzBest ResponseYou've already chosen the best response.1
Once you have these values, you can add up all the xcomponents (there are 2). There is also only one ycomponent (that of a). To get c, you'll have to compensate in the opposite direction, so take the opposite values of the x and ycomponents. Hope this is clear enough ;)
 one year ago

ranxu6j3Best ResponseYou've already chosen the best response.0
cool how did you draw that? tks a lot, in your way that I'll get c=5.5, is it? but the answer is 7, am I misunderstanding or? sorry for being confused ,still your pic is very clear
 one year ago

ranxu6j3Best ResponseYou've already chosen the best response.0
oh sorry, wrong considering , give me a moment
 one year ago

ZeHanzBest ResponseYou've already chosen the best response.1
I used Geogebra. Look it up at geogebra.org (it's free).
 one year ago

ranxu6j3Best ResponseYou've already chosen the best response.0
thank you very much, i was stupidly stuck, and thanks for telling me the app, i think it will be useful
 one year ago

ZeHanzBest ResponseYou've already chosen the best response.1
Here's another drawing. The sum of the xcomponents is 5 + 2.5 = 7.5. The only ycomponent is 2.5√3. (there is a 306090triangle involved). So to compensate, c should go 5.5 to the right and 2.5√3 down: (lenght is indeed 7!)
 one year ago

ranxu6j3Best ResponseYou've already chosen the best response.0
yeah i got 7 when i told you i got it, thank you very much sorry for having a wrong considering at first, i can't thank you enough for your patience and enthusiasm of answering me. i can imagine what's going on when you gave me first picture. thaks again
 one year ago
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