Why does v∙w = ||v|| ||w|| cos(θ)? The proof is fun!
Why it's on BrighterTube
Editorial review · 85% confidenceNew channel Bill Kinney: title sample judged 'whole' (Nearly every upload is a genuine in-depth math lecture or worked example across analysis, algebra, calculus, and statist); passed a second screen for sellers/exam-prep/re-uploads; 3 of 3 sampled transcripts showed teaching, 0 not; every title checked strictly; oEmbed verified.
What you'll learn
A 8-minute video from Bill Kinney: “Why does v∙w = ||v|| ||w|| cos(θ)? The proof is fun!”.
Video by Bill Kinney, played through YouTube's embedded player.