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The Sine Rule Draw any triangle. Measure sides and angles. Test this rule out! Angle A is opposite side a. Angle B is opposite side b. Angle C is opposite side c.

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Your objective is to prove the Sine Rule! On your worksheet there are seven statements/diagrams – these are the key elements of your proof. Your task is to use the elements to create a proof of the Sine Rule. You should explain each step of your proof. You may create elements of your own. You may choose not to use some of the elements. Create a poster of your proof!

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Use a formula from your proof to replace height Can you create a formula for the area of this triangle?

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Notes Over 8.1 Solving Oblique Triangles To solve an oblique triangle, you need to be given one side, and at least two other parts (sides or angles).

Notes Over 8.1 Solving Oblique Triangles To solve an oblique triangle, you need to be given one side, and at least two other parts (sides or angles).

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