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Trigonometry, ordinary level.

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  • 03-05-2008 11:38pm
    #1
    Pete29
    Registered Users Posts: 224 ✭✭


    What exactly do we need to know for trigonometry. Just wondering can i leave anything out to save time. Thanks


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    #2
    Cokehead Mother
    Closed Accounts Posts: 773 ✭✭✭Cokehead Mother


    http://www.education.ie/servlet/blobservlet/lc_maths_sy.pdf?language=EN

    Know what sin, cos and tan are.

    Know the sine and cosine rules.

    Know how to use the compound angle formulae.

    Know how to get the area of a circle sector, or the length of an arc.


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    #3
    blue-army
    Registered Users Posts: 1,301 ✭✭✭blue-army


    Bring a protractor on the day of the exam. If you don't know which to use (ie. sin, cos, tan) ,just measure the angle and work backwords....Works for me!


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    #4
    Mark200
    Registered Users Posts: 3,536 ✭✭✭Mark200


    Cokehead Mother wrote: »

    Know the sine and cosine rules.
    Know how to get the area of a circle sector, or the length of an arc.

    Those are in the log tables, so you don't have to know them off by heart. But you need to know how to use them, and when to use them.


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