Click the green flag to start the interactive introduction to sine and cosine.
I also made a project with examples of animations you can make with sine and cosine - Sine & Cosine Fun! https://scratch.mit.edu/projects/629421648/ Check out my other trigonometry projects here: https://scratch.mit.edu/studios/27179398/ I recently discovered "What are sine and cosine?" by @D-ScratchNinja, which explains it in a similar but slightly different and much more concise fashion, and with a much better visualization. Check it out: https://scratch.mit.edu/projects/842459411/ The relevant Scratch blocks are described here: https://en.scratch-wiki.info/wiki/()_of_()_(Operators_block)#Sin.2C_Cos.2C_and_Tan Here are some general trigonometry resources (from basic to advanced): https://www.mathsisfun.com/algebra/trigonometry.html https://en.wikipedia.org/wiki/Trigonometry https://mathworld.wolfram.com/Trigonometry.html Thanks to @-1nfinity- for helpful feedback.
