Scaling the right-angled triangle from the unit circle
Lesson 6 / 12
Lesson video
0:00 / 0:00
Lesson slides
Lesson details
Lesson outcome
I can recognise the right-angled triangle within a unit circle and use proportion to scale to similar triangles.
Show transcript
There are specific ratios within the two key right-angled triangles defined by the unit circle.
The first right-angled triangle has hypotenuse of length one.
The opposite and adjacent sides of this triangle have lengths sin(θ) and cos(θ), respectively.
The second right-angled triangle has an adjacent side length of one.
The opposite side of this triangle has length tan(θ)
Worksheet
not available yet
Quizzes
This quiz is not available yet.
What pupils see
The same lesson as a pupil sees it. You can set any section as work on its own.
- IntroductionPrepare · Not available
- Starter quizActivate · Not available
- Lesson videoLearn
- Exit quizCheck · Not available
This content is by Cashar and published under an open licence.