Introduction to Game Development (E22: trigonometry)

From a channel Lumen includes in full: Sebastian Lague's Coding Adventures build simulations, renderers, chess engines and procedural worlds from scratch, explaining the algorithms and maths with original visualisations; earlier series are thorough Unity and C# tutorials.

A 15-minute video from Sebastian Lague's catalogue; the title names its topic.

Video by Sebastian Lague, played through YouTube's embedded player.