Pipefitting mainly, but there's plenty of fabrication that requires trig. It aids with triangulation...say you have some sketchy prints with only 2 dimensions of something and you need the 3rd. Finding that third dimension is budget trig, sort of.
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.
Well, if Edward Cullen the bloodsucking vampire can use trigonometry. Then I am asuming farmers can as well.
The first recorded use of trigonometry came from the Hellenistic mathematician Hipparchus
An architect who designs a bridge would use trigonometry, among other mathematical techniques.
Yes.
yes they do
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Yes
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.
They use it to measure angles and lengths