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Basic Trigonometry Primer

Basic Trigonometry Primer. SOH CAH TOA. How to find Trig Ratios : Trig Tables (old way). SIN COS TAN. SOH CAH TOA. . HYPOTENUSE. 100 cm. ADJACENT. 80.5cm. OPPOSITE. 80.5 100. = 0.805. tan  =.  = 38.8 ˚. 80.5 100. = 0.805. tan  =. tan -1 (0.805) = .

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Basic Trigonometry Primer

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  1. BasicTrigonometry Primer

  2. SOHCAHTOA

  3. How to find Trig Ratios: Trig Tables (old way) SIN COS TAN

  4. SOHCAHTOA  HYPOTENUSE 100 cm ADJACENT 80.5cm OPPOSITE 80.5 100 = 0.805 tan  =  = 38.8˚

  5. 80.5 100 = 0.805 tan  = tan -1 (0.805) =  “inverse trigonometric function” Enter: “0.805” “2nd“ “tan” Answer: 38.8˚

  6. Interactive (next slide) http://www.mathsisfun.com/sine-cosine-tangent.html

  7. FAQ About Trigonometry catcode.com/trig/index.html Q: What is trigonometry? A: Trigonometry is the study of how the sides and angles of a triangle are related to each other. Q: WHAT? That’s all? A: Yes, that’s all. It’s all about triangles, and you can’t get much simpler than that. Q: You mean trigonometry isn’t some big, ugly monster that makes students turn green, scream, and die? A: No. It’s just triangles. Q: Oh. But isn’t that boring? A: We’ll try to make it a little more fun by letting you play around with the triangles interactively.

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