Every person who went to secondary school in the UK (and probably all other countries). They may not have learned much and retained even less but they must have studied it.
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Amongst other factors, the answer depends onwhere you took trigonometry (which country/school),what level you studied,what you want to do in life.
Pythagoras was the most pivotal mathematician in the area of trigonometry. His pythagoras theorem literally redefined the way people studied right angled triangles.
plane trigonometry spherical trigonometry
The main kinds are plane trigonometry and solid trigonometry. The latter will include trigonometry in hyper-spaces.
The topics studied in trigonometry including the properties of angles and triangles, as well as the properties of functions will greatly enhance your ability to reason, even qualitatively, for problems in the real world, even if they don't involve trig. Also, the discipline learned in the study of trigonometry will assist in every other subject studies, regardless of its nature.