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Babynini
 one year ago
u = 3i+2j
v=5ij
a) find the angle between u and v
b) find the component of u along v
c) find proj_v u
Babynini
 one year ago
u = 3i+2j v=5ij a) find the angle between u and v b) find the component of u along v c) find proj_v u

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Babynini
 one year ago
Best ResponseYou've already chosen the best response.1@jim_thompson5910 I did part a but it came out wrong o.o

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1Angle: cos(theta)= (u*v)/uv

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1u dot v should be 13

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1you lost a negative sign

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1hrm. Yeah I added 2 instead of subtracting it.

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1how about v

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1so then cos(theta) = 13/(13 sq2)

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1ah k, it was just that 13

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1component of u along v would be 2.54?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1sorry got distracted

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1I'm getting 2.5495097567964

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1did you get about the same?

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1Sorry, I didn't see you had replied.

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1that's ok I didn't see it earlier too

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1did you figure out part c)?

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1Yep I got 5/2i  1/2 j

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1I got <2.5, 0.5> which is the exact same

Babynini
 one year ago
Best ResponseYou've already chosen the best response.1Fantastic :) the form you wrote it in is probably better haha

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1either way works
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