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Learning objects Trig degrees: cosine to 360: demo

TLF ID L9117

Watch a demonstration showing how cosine is defined in the unit circle. Connect this definition with the right-angled triangle definition commonly used in right-angled triangle trigonometry. This learning object is one in a series of nine objects. Three objects in the series are also packaged as a combined learning object.



Educational details

Key learning objectives
  • Students view the unit circle definition of the cosine function.
  • Students view the connection between the unit circle definition of cosine and the right-angled triangle definition of cosine.
Educational value
  • Demonstrates the definitions of the cosine function (from 0° to 360°).
  • Enables students to use the unit circle tool to explore cosine values in different quadrants.
Year level

10; 11; 12

Learning area
  • mathematics
Strand
  • Mathematics/Number and algebra
  • Mathematics/Measurement and geometry
    Student activity
    • Interactives;
    • Experiment;
    • Analysis;
    • Modelling;
    • Data manipulation and interpretation

    Other details

    Contributors
    • Script writer
    • Name: Will Morony
    • Address: Adelaide SA 5000 Australia
    • Subject matter expert
    • Name: Will Morony
    • Address: Adelaide SA 5000 Australia
    • Educational validator
    • Name: Paul White
    • Address: Strathfield NSW 2135 Australia
    • Technical implementer
    • Publisher
    • Date of contribution: 20 Sep 2013
    • Organisation: Education Services Australia
    • Address: Melbourne VIC 3000 Australia
    • URL: http://www.esa.edu.au/
    Access profile
    • Colour independence
    • Hearing independence
    Learning resource type
    • Interactive Resource
    Browsers
    • Microsoft Internet Explorer - minimum version: 8.0 (MS-Windows) - maximum version: 9.0 (MS-Windows)
    • Firefox - minimum version: (MS-Windows)
    • Safari - minimum version: 5.1 (MacOS)
    Operating systems
    • MacOS - minimum version: 10.6
    • MS-Windows - minimum version: XP - maximum version: 7
    Platform requirements
    • Due to the use of rich media content, this learning object is suitable for a connection speed of 256 kbit/s or faster.
    Rights
    • © Education Services Australia Ltd, 2013, except where indicated under Acknowledgements.