Answer to Question #344595 in Mechanics | Relativity for Neliswa

Question #344595

Given r1=3mi+4mj.dertemine the magnitude and direction angles of the position vector

1
Expert's answer
2022-05-25T10:27:04-0400
"\\vec r=(3\\hat i+4\\hat j)\\:\\rm m"

The magnitude

"r=\\sqrt{3^2+4^2}=5\\;\\rm m"

The direction angles

"\\alpha=\\cos^{-1}\\frac{3}{5}=53^\\circ"

"\\beta=\\cos^{-1}\\frac{4}{5}=37^\\circ"


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