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

Find the component form of v if ||v||=2 and the angle it makes with the x-axis is 60 degrees

jimthompson5910 (jim_thompson5910):

Let v = (x,y) This then means that x = ||v||*cos(theta) and y = ||v||*sin(theta)

jimthompson5910 (jim_thompson5910):

I should point out that v is a vector. The quantities x and y are scalars.

OpenStudy (anonymous):

so i put 2 where the ||v|| goes, but where do the degrees come in?

jimthompson5910 (jim_thompson5910):

oh and I should have mentioned that theta is the angle

jimthompson5910 (jim_thompson5910):

so replace theta with 60

OpenStudy (anonymous):

so x=1 and y=1.732

jimthompson5910 (jim_thompson5910):

you nailed it

jimthompson5910 (jim_thompson5910):

so v = (1,1.732)

OpenStudy (anonymous):

well that one was easier than some of the others :)

jimthompson5910 (jim_thompson5910):

yes it was, do you see how I got x = ||v||*cos(theta) and y = ||v||*sin(theta) ??

OpenStudy (anonymous):

yeah, it makes sense

jimthompson5910 (jim_thompson5910):

alright that's great

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