# Trigonometry Revision

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Slide 1: Video
WiskundeMiddelbare schoolvwoLeerjaar 3

This lesson contains 11 slides, with interactive quizzes, text slides and 1 video. Lesson duration is: 45 min

## Items in this lesson

#### Slide 1 -Video

Today we will see how much we know

#### Slide 2 -Slide

What do you need to do first when you have a question which asks you to find the missing angle or missing side in a right-angled triangle?

#### Slide 3 -Open question

Look at the following steps and put them in the correct order
a Fill in what you know
c Write the rule
d Label sides (O, A, & H)
e Make a sketch and include what you know
f Choose which rule to use

A
d,f,e,a,c,b
B
e,d,f,c,a,b
C
f,c,e,d,a,b
D
d,f,c,a,b,e

#### Slide 4 -Quiz

Look at the triangle and choose which rule to use to calculate the missing angle.

#### Slide 5 -Open question

Look at the triangle and choose which rule to use to calculate the missing angle.

#### Slide 6 -Open question

Look at the triangle and choose which rule to use to calculate the missing side x.

#### Slide 10 -Slide

Explain what we have revised/ learnt today.

Remember to note this in your revision book.