Question

найдите tg x, если sin x = 0.8, П/2 < x <П

Answer 1

x∈II

$cosx=- sqrt{1-0.64} = - sqrt{0.36} =- 0.6 \ tgx= frac{sinx}{cosx} =- frac{0.8}{0.6} =- frac{8}{6} =- frac{4}{3} =-1 frac{1}{3}$