Finding the Direction of a Resultant Vector in Rectangular Coordinates

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SUMMARY

The discussion focuses on determining the magnitude and direction of a resultant vector formed by two vectors in rectangular coordinates: one with a magnitude of 450' in the positive x-direction and another with a magnitude of 250' in the positive y-direction. The magnitude of the resultant vector is calculated using the Pythagorean theorem, yielding approximately 514.78'. To find the direction, the angle θ with respect to the x-axis is determined using the tangent function, specifically tan(θ) = y/x, which converts rectangular coordinates to polar coordinates.

PREREQUISITES
  • Understanding of vector addition in physics
  • Familiarity with the Pythagorean theorem
  • Basic knowledge of trigonometric functions, particularly tangent
  • Concept of converting rectangular coordinates to polar coordinates
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  • Study vector addition and resolution of vectors in physics
  • Learn about the Pythagorean theorem applications in vector calculations
  • Explore trigonometric functions and their applications in determining angles
  • Research the conversion methods between rectangular and polar coordinates
USEFUL FOR

This discussion is beneficial for students studying physics, particularly those focusing on vector analysis, as well as educators teaching concepts related to vectors and coordinate systems.

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Homework Statement



you have a vector in the positive "x" direction with a magnitude of 450' and a vector in the positive "y" direction with a magnitude of 250' determin the magnitude and direction of the resultant

Homework Equations





The Attempt at a Solution


I solved it = a^2+b^2=c^2

450^2+250^2=514.78^2 ?? How do I know which direction though?
 
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The standard way to express directionality in such a case would be to find the angle the resultant vector makes with the x-axis. Draw a diagram and you will see you can find the angle using basic trigonometry: tan(θ) = y/x. The problem is essentially asking you to covert rectangular coordinates to polar coordinates.
 

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