Vector Addition Problem: Finding Final Displacement using Law of Sines/Cosines

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Homework Help Overview

The problem involves a land surveyor's movement described in terms of vector addition, specifically using the law of sines and cosines to find the final displacement after walking two segments at specified angles and distances.

Discussion Character

  • Exploratory, Conceptual clarification, Problem interpretation

Approaches and Questions Raised

  • Participants suggest drawing a diagram to visualize the problem and recommend resolving vectors into x and y components for easier addition. There is a mention of needing to form a triangle with the given information to apply the laws of sines or cosines.

Discussion Status

Some guidance has been offered regarding the drawing of diagrams and resolving vectors, but the original poster has not engaged further in the discussion since their initial post. The conversation appears to be awaiting a response from the original poster.

Contextual Notes

The original poster has not provided any attempts beyond a picture, and there is a suggestion to wait for their input before continuing the discussion.

smittyj
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Homework Statement


A land surveyor walks 5200m @ 330 degrees and then turns and goes an additional 3000m @ 180 degrees. Find his final displacement using the law of sines/cosines.



Homework Equations


I know the law of sines is a/sinA = b/sinB = c/sinC, and the law of cosines is a^2=b^2 + c^2 - 2bc cos A. I just don't know how to get started.



The Attempt at a Solution


I have no attempt at this solution except for a picture.
 
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Have you drawn a diagram? If that is your picture, why don't you post it.
 
just a suggestion. if you have problems in adding vectors then:
you can resolve each vector in x -y axis and then add them, it may help
 
It looks like you need to draw a triangle with the information given. You are given an angle and two side lengths. From there you should be able to apply one of those laws.
 
yeah, that is the way. go on
 
Where are you getting stuck? If you can get that far you are almost done.
 
hologramANDY and ashishsinghal, please note the OP hasn't been back since making the post.

You both seem to be speaking to each other. Take note of the OP's name and I'd recommend waiting for a response before endlessly posting in this thread.
 

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