Unravelling the Mystery of DEz=8333N(5/15)”

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Discussion Overview

The discussion revolves around the expression DEz=8333N(5/15) and seeks to clarify its derivation, particularly in the context of a triangle with a height of 15m and a base of 5m. The focus is on understanding the components of forces and trigonometric relationships involved.

Discussion Character

  • Technical explanation, Conceptual clarification

Main Points Raised

  • One participant questions the origin of the expression DEz=8333N(5/15) and its relation to the dimensions of a triangle.
  • Another participant proposes that DEz represents the horizontal component of a force, expressed as FDEcosθ, where θ is defined by the triangle's dimensions.
  • A third participant challenges the trigonometric definition used, specifically questioning the relationship of cosine to the triangle's sides.
  • A later reply acknowledges the confusion regarding the trigonometric definitions.

Areas of Agreement / Disagreement

The discussion contains some confusion regarding the trigonometric relationships, and there is no consensus on the correct interpretation of the cosine function in this context.

Contextual Notes

Participants have not fully resolved the definitions and relationships involved in the trigonometric expressions, leading to uncertainty in the application of these concepts.

boyongo
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Im having trouble understating this:

The last part:

DEz=8333N(5/15) where does this come from?

15m is the height and 5m is the base of the triangle.
 

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It's the horizontal component of DE i.e FDEcosθ
where cosθ = Opposite/Adjacent = (15/5)
 
but isn't cosine adjacent/Hypotenuse?
 
Oh yes, sorry!
 

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