Geometric proof of derivative of cos x AI, Data Science, & Business Analytics for Small Business Applications and Large Enterprises › Forums › Calculus › Geometric proof of derivative of cos x This topic is empty. Viewing 1 post (of 1 total) Author Posts March 5, 2025 at 8:35 am #1881 Rajeev BagraKeymaster https://www.freemathhelp.com/forum/threads/geometric-proof-of-derivative-of-cos-x.139450/#post-599273 Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In