Pythagoras' theorem and trigonometry
Essential Mathematics Year 9
Downloadable Lesson notes
Chapters
Welcome
Learning objectives
Recap of past learning
SOHCAHTOA
I'm sure he hated us!
Labelling a right-angled triangle
Example of labelling a right-angled triangle
Moving the angle!
What is a ratio?
Using SOHCAHTOA
Example 1
Example 2
Drawing a triangle from a trig ratio
Example 3
Final words
Description
This video looks at what a trigonometric ratio is and how we can find them. It's part of the Year 9 course relating to Pythagoras and Trigonometry. I also spend time explaining what SOHCAHTOA is and how we can use it to find missing side lengths and angles when we have sides and angles given to us. There are a lot of worked examples and I make sure that the theory is explained in an easy to understand way.
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