Помогите СРОООЧНОООО
Sinα=8/17 sin²α+cos²α=1 cos²α=1-sin²α cosα=+-√(1-sin²α) cosα=+-√(1-(8/17)²)=+-√(17²/17²-64/17²)=+-√(289/17²-64/17²)= =+-√(225/17²)=+-√(15²/17²)=+-15/17 tgα=sinα/cosα=8/17 : (+-15/17)=+-8/17*17/15=+-8/15 ctgα=1/tgα=+-1/(8/15)=+-15/8