Trigonometri sorusunun çözümü nedir?

Question

sin9x+sin7x/cos9x+cos7x=? 2.sin(9x+7x/2).cos(9x-7x/2)/2.cos(9x+7x/2).cos(9x-7x/2); 2.sin8x.cosx/2cos8x.cosx => sin8x/cos8x = tan8x bulunur.

Answer 1

sin9x+sin7x/cos9x+cos7x=? 2.sin(9x+7x/2).cos(9x-7x/2)/2.cos(9x+7x/2).cos(9x-7x/2); 2.sin8x.cosx/2cos8x.cosx => sin8x/cos8x = tan8x bulunur.