
 T R I G O N O M E T R Y II
Year 9 Mathematics
~ Paperless Digital Editial 1 ~
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 This series of lessons follows on from
the eLessons “Coordinate Geometry (Trig Intro)”,
also available from the Number Wonder website.
The “formula triangle method”, featured here,
has proved most effective.
1 Labelling, Starter, SOH CAH TOA.
Lesson 1 : Answers 1
2 Recap
Lesson 2 : Answers 2
3 tan
Lesson 3 : Answers 3
4 RightAngled Triangle Theory (RAT Theory)
Lesson 4 : Answers 4
RATTheory Summary Card
5 RAT Theory Flow Chart
Lesson 5 : Answers 5
6 Examination Questions
Lesson 6 : Answers 6
7 Test
Lesson 7 : Answers 7
 


 

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