I love this post 'Degrees vs Radians' which presents an open letter to students wondering, “Why Do We Use Radians Instead of Degrees?”.

Colin Beveridge has strong feelings on the subject - both teachers and students would benefit from reading his post 'Why Radians Rock (and Degrees Don't)', in which he convinces the reader of the unquestionable benefits of using radians.

Next Level Maths has a nice explanation of radians, including an interactive activity.

Incidentally, if you're excited by animations then you might like the other animations in this article '7 Animated GIFs That Will Make You Instantly Understand Trigonometry'.

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