Question

Si tg(a + b) = 5 y tg a = 7
Calcula tg b

Answer 1

Respuesta:

$\frac{-1}{18}$

Explicación paso:

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

5 = (7 + tan(b))/ 1 -7.tan(b)

5 - 35.tan(b) = 7 + tan(b)

-2 = 36.tan(b)

- 1/18 = tan(b)