MatemáticasBásico1 respuestas

Si : tan(x + y) = 1 / 2 tan(3x - y) = 3 / 4Halla : cot[2(x - y)]?

Si : tan(x + y) = 1 / 2 tan(3x - y) = 3 / 4 Halla : cot[2(x - y)].

Mejor respuesta

Lawachadehi08
3

Desarrollo :

tan(a - b) = (tan(a) - tan(b)) / (1 + tan(a)tan(b))

entonces :

tan((3x - y) - (x + y)) = (tan(3x - y) - tan(x + y)) / (1 + tan(3x - y)tan(x + y))

tan(3x - y - x - y) = (3 / 4 - 1 / 2) / (1 - (3 / 4)(1 / 2))

tan(2x - 2y) = (1 / 4) / (1 - 3 / 8)

tan(2(x - y)) = (1 / 4) / (5 / 8)

tan(2(x - y)) = 2 / 5

entonces :

cot(2(x - y)) = 5 / 2

un gusto = D.