What jobs use Pythagorean theorem?

This is what someone asked me recently.

Well, obviously you'd need to know Pythagorean theorem if your job includes triangles or rectangles in some way, for example in land surveying, or planning farmland, or designing buildings (architects) or designing furniture or frames for TVs, or making parts for machines (machinist) etc.

Remember the diagonal for a rectangle is calculated using Pythagorean theorem, and TV screen size is actually the length of the diagonal in inches.

See also my article on similar lines: Where do you need square roots or algebra - why study math?.
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