Excuse me for asking, but are you attending the 2009 National MAO Convention that's like in 4 days? Reply:
LOL, wow, I thought the same thing!! The kids at my school are already done with their chalk talks! :)
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how can trigonometry use in metallurgy
One example of an astronomer's use of trigonometry is determining the distance to a star by triangulation.
Mechanics use trigonometry to find angles mostly used in body or chassis work.
The first recorded use of trigonometry came from the Hellenistic mathematician Hipparchus
No. I have worked as a Graphic Designer for over 20 years both in Europe an the USA and have never had to use trigonometry.