What are the components of the vector between the origin and the polar coordinate (-8, (5pi)/3)(8,5π3)?

1 Answer
Feb 6, 2016

-4i +4sqrt3 j4i+43j

Explanation:

In cartesian coordinates x= rcos thetax=rcosθ. In this case it would be x=-8 cos ((5pi)/3)= -8cos (-pi/3)= -4x=8cos(5π3)=8cos(π3)=4 and y= r sin theta= -8 sin((5pi)/3)= -8 sin (-pi/3)= 4sqrt3 y=rsinθ=8sin(5π3)=8sin(π3)=43. The point would lie in 2nd quadrant.

Its vector form would be -4i +4sqrt3 j4i+43j