Prove-that-R-n-1-3-n-1-sin-3-3-n-sin-4- Tinku Tara June 4, 2023 Differentiation 0 Comments FacebookTweetPin Question Number 83213 by ~blr237~ last updated on 28/Feb/20 Provethat∀θ∈R∑∞n=13n−1sin3(θ3n)=θ−sinθ4 Terms of Service Privacy Policy Contact: info@tinkutara.com FacebookTweetPin Post navigation Previous Previous post: Question-148745Next Next post: calculate-U-n-k-0-n-1-3k-1-interms-of-H-n-k-1-n-1-k- Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Save my name, email, and website in this browser for the next time I comment.