How do you find the magnitude of <-7, -5>?

1 Answer
256
Jan 19, 2017

|<-7,-5>|=sqrt(74)|<−7,−5>|=√74

Explanation:

Remember the formula for the magnitude of a vector vecv→v.

vecv=<x,y> => |vecv|=sqrt(x^2+y^2)→v=<x,y>⇒∣∣→v∣∣=√x2+y2

Then we plug in

|<-7,-5>|=sqrt((-7)^2+(-5)^2)=sqrt(49+25)=ul(sqrt(74))

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