35●3cos3x–5sin5x
35●3cosx–5sinx |y(x)=3sinx+5cosx|
35●π/16(2k+1),k*Z | ctg3x=tg5x |
35●π/4k,k*Z {cos3x=cos5x
35●3õ (õ5ln3+....
35●–4. |sinα+cosα/sinα–cosα, tgα=3/5|
35●–4 |sinα–cosα/sinα–cosα, tgα=3/5|
35●4/5 {sin(arccos3/5)
35●67°30', 112°30'
35●x≠0, x≠ –5