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

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Answer 1 · 2017-12-15T18:06:06

#-6.467hati-2.679hatj#

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#