User talk:78.151.195.30

April 2022
Hello, I'm Meec Master. I wanted to let you know that one or more of your recent contributions&#32;to Differentiation of trigonometric functions have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Teahouse. Thanks. Meec Master (talk) 19:10, 6 April 2022 (UTC)