Discuss: What information must we have to use the sine rule to calculate a missing length?

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Presentation transcript:

Discuss: What information must we have to use the sine rule to calculate a missing length?

Two angle and one corresponding side

Discuss: What information must we have to use the sine rule to calculate a missing angle?

Two sides and one corresponding angle

Discuss: What information must we have to use the cosine rule to calculate a missing length?

Two sides and the angle between them

Discuss: What information must we have to use the cosine rule to calculate a missing angle?

All three sides are needed to calculate a missing angle

Sine or Cosine? ?

Sine or Cosine?

Sine or Cosine? ?

Sine or Cosine?

Sine or Cosine?

Find all the missing lengths within this 10 x 10 square Acknowledgments: UEA and JustMaths