Mr Hickman's Class 2020-2021
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Law of Cosines


Basics of the Law of Cosines

Types of Problems:

  • Recognize scenarios in which the Law of Cosines applies in oblique triangles
  • Understand and apply Law of Cosines applies to find angles in oblique triangles 
  • Understand and apply Law of Cosines applies to find sides in oblique triangles 

Notes & Handouts

Practice 

Video and other resources

Digital Resources


 How to use the Law of Coines to find missing side lengths and angle measurements  

S.A.S. Case (Side/Included Angle/Side)

Types of Problems:

  • Understand and apply Law of Cosines applies to find angles and sides in oblique triangles when given S.A.S. Case 

Notes & Handouts

Practice

​Video and other resources

​Digital Resources

DESMOS File: Law of Cosines SAS Case

S.S.S. (Side/Side/Side)

​Types of Problems:

  • Understand and apply Law of Cosines applies to find angles in oblique triangles when given S.S.S. Case​

​Practice

​Video and other resources

​Notes & Handouts

​Digital Resources

DESMOS File: Law of Cosine SSS Case

Applications of the Law of Cosines

​​Types of Problems:

  • Using law of sines in a real life scenario to indirectly measure a distance
  • Using law of sines in a real life scenario to indirectly measure an angle's measure

​​Notes & Handouts

​​Practice

​Video and other resources

Digital Resources






Mr Hickman is available for assistance after school practically anytime.  Talk to me to be certain that I am aware you are coming and 99% of the time I will be able to help you