1. Trigonometry 2
L.O.
All pupils can find missing sides on right angled triangles
All pupils can find missing angles in right angled triangles

2. Starter:
How do you know when to use SOHCAHTOA and when to use Pythagoras to find missing sides of right angled triangles?

3. Trigonometry 2
L.O.
All pupils can find missing sides on right angled triangles
All pupils can find missing angles in right angled triangles

4. Main 1:
find missing sides on right angled triangles
SOH-CAH-TOA
Find the missing sides on the right angles triangles on the other board.
Remember to think about whether you are to use Pythagoras or SOHCAHTOA.

5. Trigonometry 2
L.O.
All pupils can find missing sides on right angled triangles
All pupils can find missing angles in right angled triangles

6. Find the angle x in the following triangle
SOH-CAH-TOA
Find the angle x in the following triangle H
𝟕𝒄𝒎 O
Label the triangle 𝒙°
Decide which rule to use. A
𝟏𝟐𝒄𝒎
Substitute in your values

7. Find the angle x in the following triangle
SOH-CAH-TOA H
Find the angle x in the following triangle
𝟗𝒄𝒎
𝟏𝟒𝒄𝒎 O
Label the triangle 𝒙°
Decide which rule to use. A
Substitute in your values

9. Trigonometry 2
L.O.
All pupils can find missing sides on right angled triangles
All pupils can find missing angles in right angled triangles

10. Plenary: H O
𝟑𝟐° A
𝟐𝟎𝒎

11. Trigonometry 2
L.O.
All pupils can find missing sides on right angled triangles
All pupils can find missing angles in right angled triangles