Amongst other factors, the answer depends on
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I think you need to understand algebra 2 before you begin trigonometry
plane trigonometry spherical trigonometry
The main kinds are plane trigonometry and solid trigonometry. The latter will include trigonometry in hyper-spaces.
Colleges offer multiple semester-long classes in trigonometry; it's not something we can teach you in a few paragraphs on a website. If you're really interested, I recommend you take a class at a community college.
Hipparchus is the father of trigonometry.