Question

qual é a de tangente 105°​

Answer 1

Tg(105°)=tg(45°+60°)

Tg(105°) = (tg45°+tg60°)/(1-tg45°.tg60°)

Tg(105°) =(1+√3)/(1-1.√3)

Tg(105°) =(1+√3)(1+√3)/(1-√3)(1+√3)

Tg(105°) =(1+2√3+3)/(1-3)

Tg(105°) = (4+2√3)/-2

Tg(105°) = -2-√3