(sinx+sin3x+sin5x)/(cosx+cos3x+cos5x) + 2tgx=0

(sinx+sin3x+sin5x)/(cosx+cos3x+cos5x) + 2tgx=0(2sin3xcos2x+sin3x)/(2cos3xcos2x+cos3x)+2tgx=0sin3x(2cos2x+1)/cos3x(2cos2x+1)+2tgx=0tg3x+2tgx=0(3tgx-tg³x)/(1-3tg²x)+2tgx=0(3tgx-tg³x+2tgx-6tg³x)/(1-3tg²x)=0{5tgx-7tg³x=0{1-3tg²x≠0tgx(5-7tg²x)=0tgx=0⇒x=πk,k∈z7tg²x=5⇒tg²x=5/7⇒tgx=+-√35/7⇒x=+-arctg√35/7+πk,k∈z