Using Pythagoras's theorem to calculate the diagonal of a rectangle. Useful if you want to know if you can turn a table around in a room.
Or, as happened to someone who will remain anonymous, whether you can put up a wardrobe that has been assembled on the floor of a room. No, it was not me and no, the wardrobe could not be put up - it had to be taken apart and put together in position.
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Ir is in some people's real life. Example: millions of students that want to pass algebra.
Because it's needed in everyday life - whether adding up a shopping bill or solving complex equations in your job.
If you are a scientist, engineer or mathematician, there are too many examples to list. If you aren't, then there are basically none, except in finance.
well, if you know all the formulating equations it will make you better at regular equations and regular equations can be used in everyday life