How Is the Right Triangle Used in Truss Force Calculations?

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Homework Help Overview

The discussion revolves around the application of right triangles in truss force calculations within the context of a Statics problem. The original poster expresses confusion regarding the use of a right triangle in a specific truss problem, particularly in relation to force components and trigonometric ratios.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to understand how the right triangle is utilized in the calculations, specifically questioning the derivation of certain force components. Some participants suggest a connection to basic trigonometric principles, while others imply a need for foundational knowledge in trigonometry.

Discussion Status

The discussion is ongoing, with participants offering varying levels of guidance. While some suggest revisiting trigonometric concepts, there is no explicit consensus on the original poster's understanding or the specific application of the triangle in the problem.

Contextual Notes

There is an indication that the original poster may lack familiarity with basic trigonometric relationships, which could be impacting their ability to grasp the problem. The context of preparing for a Statics final adds a layer of urgency to the discussion.

mohamadali
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Hi, I have a, I believe simple, problem. I am studying for a Statics final and while doing problems with a Truss I came to a problem that I did not know how to solve. It is already solved for me, but I do not get how. The truss has a force coming out from the side but instead of an angle there is a right triangle. I do not understand how to use the triangle. I will upload a picture of the problem and the answer. If anyone can help me understand how the triangle is being used to compute the problem I would greatly appreciate it! Thanks in advance!

For example I do not understand where or why they get (4/5)Tcd or 130(12/13)

Direct Link:: http://i.imgur.com/ee9zP.jpg

ee9zP.jpg
 
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oh nvm i think i got it, 3, 4 , 5 triangle!
 
Shouldn't you be familiar with basic trigonometry in order to deal with statics? What are the relations in a right triangle?
 
I think you need to do some revision before your final. Look up the ratios of sine, cosine and tan.
 

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