Your Teacher is WRONG about SOHCAHTOA! (How to do Trigonometric ratios but better)
https://www.youtube.com/watch?v=fpaEyDLmh1s
Teaching Idea(s), Video, YouTube
What we really need to be learning instead is a thing called TRIGONOMETRIC SCALARS. sin, cos and tan are all still there, opposite, adjacent and hypotenuse are all here too. It's just a different, and BETTER way of thinking about the relationship between the angles and sides of a right angle triangle. This new way of thinking will make your life easier and better, especially when you move on to learning about vectors in component form later in your school career.
A video version of this blog post by David Butler, The Trig functions are about multiplication.
26 October 2021 Edit: 26 October 2021
- Topics:
- Measurement, Trigonometry
- Content Type:
- Teaching Idea(s), Video, YouTube
- The Australian Curriculum
- Measurement and Geometry, Pythagoras and trigonometry, ACMMG224 Year 9 Apply trigonometry to solve right-angled triangle problems, ACMMG274 Year 10A Use the unit circle to define trigonometric functions, and graph them with and wit
- The Australian Curriculum Version 9.0 New
- Year 9, Measurement Year 9, AC9M9M03 solve spatial problems, applying angle properties, scale, similarity, Pythagoras’ theorem a
- Australian Curriculum / Specialist Mathematics
- Unit 1 Topic 2 Vectors in the plane, Algebra of vectors in the plane:, ACMSM016 express a vector in component form using the unit vectors i and j
- NSW Mathematics K-10 Syllabus
- Measurement and Geometry, MA5.1-10MG Right-Angled Triangles (Trigonometry), MA5.2-13MG Right-Angled Triangles (Trigonometry), MA5.3-15MG Right-Angled Triangles (Trigonometry)
- NSW Curriculum New
- Measurement and space, Pythagoras and trigonometry, MA5-TRG-C-01 Trigonometry A, MA5-TRG-C-02 Trigonometry B, MA5-TRG-P-01 Trigonometry C (Path), MA5-TRG-P-02 Trigonometry D (Path)
- NSW Mathematics Advanced Stage 6 Syllabus
- Trigonometric Functions, MA-T1 Trigonometry and Measure of Angles, T1.1 Trigonometry
- NSW Mathematics Extension 1 Stage 6 Syllabus
- Vectors, ME-V1 Introduction to Vectors, ME-V1.1 Introduction to vectors
Submit a correction to this link
Comments
How have you used this link in your classroom? Share your teaching ideas or leave a review about this link.
Sign in to leave a comment.
There are no comments for this link.