Extended Mathematics 11 sine and cosine law
Specific Curriculum Outcomes
G03 Solve problems that involve the cosine law and the sine law, including the ambiguous case.
G03 Solve problems that involve the cosine law and the sine law, including the ambiguous case.
G03 Activities
- Law of Sines and Cosines from Math Teacher Mambo - A worksheet and demonstration with spaghetti to show the ambiguous case.
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- Trig Pile Up Including Sine and Cosine Rule from MathematicQuinn on TES - A challenging Trig Pile up requiring the use of SOHCAHTOA, Pythagoras' Theorem, Sine rule, Cosine Rule and finding an obtuse angle with Sine.
- 3 Fact Triangles from Jonny Griffiths' RISP collection - A 3 Fact triangle is one where 3 of the following facts are true: One side is 3cm; One angle is 90 degrees; One side is 4cm; One angle is 30 degrees. How many 3 fact triangles are there? What is the area and perimeter for each one. This is a great activity to practice sine and cosine law.