n Learning and Teaching Mathematics - Some remarks about the form A cosx + B sinx

Volume 2013, Issue 15
  • ISSN : 1990-6811


Deciding where a syllabus begins and ends is never an easy thing, and I suppose it will inevitably happen that every now and then a line is drawn across something that I personally see as being part of one big story. A good example concerns trigonometric equations. In our South African school syllabus we expect pupils to be able to solve quadratic equations in trigonometric functions, equations involving both double and single angles, and even rather arcane equations such as sin( - 20°) = cos(40° - 2).

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