Question

Resolvendo a equacão 5 tg² x - 5 = 0, sabendo que 0° ≤ x ≤ 360° , obtemos :
a) V = {45°;225°}
b) V = {30°;150°;210°;330°}
c) V = {135°;315°}
d) V = {60°;240°}
e) V = {45°;135°;225°;315°}

Answer 1

Boa noite Lucas

5 tg²(x) - 5 = 0

tg²(x) = 5/5 = 1

tg(x) = 1,  x = 45, x = 135
tg(x) = -1, x = 225, x = 315

e) V = {45°;135°;225°;315°}