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Help please! What is the magnitude of the position vector whose terminal point is (-2, 4)?
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Help please!
What is the magnitude of the position vector whose terminal point is (-2, 4)?

User Gil Margolin
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1 Answer

5 votes
Vectors always start at the origin and end at the terminal point. Think of it as just a line - the magnitude is the length of the line. So, just find the distance from (0,0) to (-2,4) and that will be the answer.

sqrt(4+16)=sqrt 20 = 2*sqrt5
User Dubas
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