Question

Помогите пожалуйста

Answer 1

$sinalpha = -0.6; pi < alpha < frac{3pi}2 => cosalpha < 0\cosalpha = sqrt{1-sin^2alpha} = sqrt{1-0.36} = sqrt{0.64}\cosalpha = -0.8\tgalpha = frac{-0.6}{-0.8} = 0.75\ctgalpha = frac{-0.8}{-0.6} = 1.(3)$

Answer 2

I hope this helps you