User talk:218.185.159.88

August 2021
Please do not add or change content, as you did at List of trigonometric identities, without citing a reliable source. Please review the guidelines at Citing sources and take this opportunity to add references to the article. Thank you.

Please do not introduce incorrect information into articles, as you did to List of trigonometric identities. Your edits could be interpreted as vandalism and have been reverted. If you believe the information you added was correct, please cite references or sources or discuss the changes on the article's talk page before making them again. If you would like to experiment, use the sandbox. Thank you. - DVdm (talk) 12:00, 13 August 2021 (UTC)

Please stop your disruptive editing. If you continue to add unsourced or poorly sourced content, as you did at List of trigonometric identities, you may be blocked from editing. - DVdm (talk) 14:42, 13 August 2021 (UTC)