Sine and Cosine of a Triangle

• 10.1
• 10.0
• 10.9
• 8.86

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

• 6.99
• 6.33
• 13.59
• 7.83

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CCSS.HSG.SRT.C.8

When using the sine rule how many parts (fractions) do you need to equate?

• All 3 parts

• 1 part

• 2 parts

Which rule can be used directly for this triangle?

• The Sine Rule

• The Cosine Rule

• The Area of a Triangle

• Pythagoras' Theorem

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Which rule could you use to find the side opposite angle B? 

• cosine rule

• sine rule

• both sine rule and cosine rule

• Pythagorean theorem

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Which could you use to find another angle of the triangle? 

• Cosine rule

• Sine rule

• Pythagorean theorem

• both sine rule and cosine rule

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Which rule could you use to find angle K? 

• cosine rule

• sine rule

• both sine rule and cosine rule

• Pythagorean theorem

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Which rule could you use to find side p? 

• sine rule

• cosine rule

• both sine rule and cosine rule

• Pythagorean theorem

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Which rule would you use to find angle Q?

• sine rule

• cosine rule

• Neither sine rule nor cosine rule

• Pythagorean theorem

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Draw the following triangle and label the sides (a,b,c) and their corresponding opposite angles (A,B,C). 
A = 58⁰, B = 76⁰  and  c = 8, use the Sine rule to find the length of side a.  

• 9

• 8

• 7

• 6

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11