I think that’s like saying one “uses” advanced physics every day because they use a cell phone. The OP question was probably asking more about what practical us

I think that’s like saying one “uses” advanced physics every day because they use a cell phone. The OP question was probably asking more about what practical uses are there for normal people to actually use trig, the way you use arithmetic to calculate a tip at a restaurant. To that I’d say: finding the height of something only knowing the length of the base and an angle. Or triangulating your position, surveying your property to make a garden, etc.