Question

Sabendo que tg x = -3, calcule tg (45\deg + x)

Answer 1

tg(45 + x) = tg45+tgx / 1 -tg45.tgx

tg(45 + x) = 1-3 / 1 -1.(-3)

tg(45 + x) = -2/1+3 = -2/4 = -1/2 ✓