Question

What are the components of the vector between the origin and the polar coordinate `(-7, (pi)/8)`?

Answer 1

`-6.467hati-2.679hatj`

Explanation:

Using:

`x=rcostheta`

`y=rsintheta`

#x=-7cos(pi/8)=-6.467

#x=-7sin(pi/8)=-2.679

( 3 .d.p.)

Vector:

`-6.467hati-2.679hatj`