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

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Presentation transcript:

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

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

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

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.

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

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

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

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

Plenary: H O 𝟑𝟐° A 𝟐𝟎𝒎

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