Question

@ganeshie8 Do you know how to do this?
Write the vector v in terms of i and j whose magnitude and direction angle θ are given.

||v||= 8, θ = 30°

Answer 1

@ikram002p u free ? plz help..

Answer 2

no he dnt ^^

Answer 3

and no im not free :)

Answer 4

lol thats funny :) ok let me show u bquick how to do this

Answer 5

wat you're given is simply \((r, \theta) = (8, 30)\)

Answer 6

\(i\) and \(j\) are the x and y components of that polar representation

Answer 7

x = r cos(theta)
y = r sin(theta)

Answer 8

so,
\(i = x =r \cos \theta = 8*\cos 30 = ?\)
\(j = y =r \sin \theta = 8*\sin 30 = ?\)

Answer 9

i=1.23?
j=-7.90?

Answer 10

i=8*cos(30) = 8*sqrt(3)/2 = 4sqrt(2)

Answer 11

j=8*sin(30) = 8*1/2 = 4