Essential Mathematics Year 9
Solving for the denominator
Pythagoras' theorem and trigonometry
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About this lesson
This is another video in the Year 9 Trigonometry series of videos at Year 9 level looking at how we can find missing side lengths for right angled triangles. In the previous video I looked at how we can find missing side lengths of right angled triangles where the unknown variable was always on the top of a fraction. This made life a little easier. When the unknown variable is on the denominator we need to "switcharoo" a couple of things. I show you the easiest way to do this along side lots of examples. The theory is explained in an easy to understand way to help you smash maths!
Lesson chapters
- Welcome
- Learning objectives
- Recap of past learning
- RECAP: Pythagoras' Theorem
- RECAP: Surds
- Is this much harder than what we've been doing before?
- Example 1: Finding the missing side length
- Example 2: Finding the missing side length
- Final words
Video details
- Title Solving for the denominator
- Section Pythagoras' theorem and trigonometry
- Course Essential Mathematics Year 9
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