We ask what happens in the 1st principles differentiation if the angle x is measured in degrees. The question is answered by referring to the limits calculated previously.

Differentiation of sin and cos from 1st principles: Part 4 Why radian? (MathsCasts)

These MathsCasts were produced by the mathematics support centres at Swinburne University, the University of Limerick and Loughborough University. They were part of a collaborative research project to develop high quality resources and investigate the effectiveness of MathsCasts to support mathematics learning. The full set of resources are available at http://commons.swin.edu.au/s/mathscasts MathsCasts are licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License

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Differentiation of sin and cos from 1st principles: Part 4 Why radian? (MathsCasts)

Differentiation of sin and cos from 1st principles: Part 4 Why radian? (MathsCasts)