Question

Dado - 3 sen^2x + cos^2 x = - 3 calcule sen x e cos x

Answer 1

$\boxed{cos^2x=1-sen^2x}\\ \\ - 3 sen^2x + cos^2 x = - 3\\ \\ -3sen^2x+1-sen^2x=-3\\ \\ -4sen^2x=-4\\ \\ sen^2x=1\\ \\ senx=\pm1\\ \\ cosx=0$