This is a very useful on showing some easy ways of deriving how to get the exact Trig Ratios for 0, 30, 45, 60 and 90 degrees. I show simple proofs of all the exact ratios as well as summarizing the important exact ratios you should either memorize or easily derive on your own. They are very useful to know because you won't need to rely on a calculator all the time.
Video notes and playlist:
- PDF notes: https://1drv.ms/b/s!As32ynv0LoaIitpVd2RYqIcQX5T0vg
- HIVE notes: Exact Trigonometry Ratios Part 1: 0, 30, 45, 60, and 90 Degrees
- Trigonometry playlist: https://www.youtube.com/playlist?list=PL5EA2C23DE654B0DB
Related Videos:
Trigonometry: Sine, Cosine and Tan Functions:
Angles - Degrees vs Radians: What are Radians??:
Proof that Sum of Angles in ANY Triangle = 180 degrees:
Simple Proof of the Pythagorean Theorem:
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I was pretty good at Trig
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