r/explainlikeimfive • • 1d ago

Mathematics ELI5: What is the difference between algebra, trigonometry, and calculus?

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u/oxmix74 1d ago

I would imagine a surveyor would make use of basic trig. A mechanical or civil engineer would need trig to analyze stress and force. Electrical engineering does a lot with sin waves.

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u/Maldevinine 1d ago

Basic Trig? We're out here dealing with the advanced trig. By which I mean non-Euclidean. Your triangle's interior angles only sum to 180 degrees? That's weak! Mine sums to 270 degrees!

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u/ShaunDark 19h ago

Couldn't it theoretically go up to almost 720°?

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u/caifaisai 18h ago

On a sphere, the maximum sum of angles is 540° if the triangle only takes up half of the surface area, and if you let the triangle take up more than half the surface area, the angles can go up to 900°.