This page is devoted to the learning of Trigonometry I (basic trigonometry). It is part of the Secondary 4 (Grade 10) math curriculum where I teach, but this material is required knowledge in secondary school Math no matter where you study.
Click on one of the links at the right of this page. I strongly suggest you go through all five of these topics in order, starting with "SOH formula."
When you complete the learning, come back to this page and select the link to the next formula.
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