let-give-x-lt-1-prove-that-n-1-x-n-sin-n-x-sin-1-2x-cos-x-2- Tinku Tara June 4, 2023 Relation and Functions 0 Comments FacebookTweetPin Question Number 32935 by abdo imad last updated on 06/Apr/18 letgive∣x∣<1provethat∑n=1∞xnsin(nθ)=xsinθ1−2xcosθ+x2. Terms of Service Privacy Policy Contact: info@tinkutara.com FacebookTweetPin Post navigation Previous Previous post: let-give-x-lt-1-prove-that-n-1-x-n-cos-n-xcos-x-2-1-2xcos-x-2-Next Next post: let-give-x-lt-1-prove-that-n-1-cos-n-n-x-n-1-2-ln-1-2xcos-x-2- Leave a Reply Cancel replyYour email address will not be published.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.