Trigonometrical Ratios And Identities by Anshul Chanchlani - Friday, 13 June 2008, 3:16 PM Number of replies: 1 Prove That sinx/cos3x + sin3x/cos9x + sin9x/cos27x = 1/2 (tan27x-tanx) Please reply with solution Thankyou! Permalink Reply In reply to Anshul Chanchlani Re: Trigonometrical Ratios And Identities by Sinjan Jana - Friday, 13 June 2008, 8:12 PM See the attached soln c26b93f769464a8e69a169e978598202f97d8a01.gif Permalink Show parent Reply
In reply to Anshul Chanchlani Re: Trigonometrical Ratios And Identities by Sinjan Jana - Friday, 13 June 2008, 8:12 PM See the attached soln c26b93f769464a8e69a169e978598202f97d8a01.gif Permalink Show parent Reply
c26b93f769464a8e69a169e978598202f97d8a01.gif