Question

Вычислите tg( -1740)

Answer 1

Ответ:

получится 1.732050808

Answer 2

$\displaystyle\bf\\tg(-1740^\circ)=-tg1740^\circ=-tg(180^\circ\cdot 9+120^\circ)=\\\\=-tg120^\circ=-tg(180^\circ-60^\circ)=-tg(-60^\circ)=tg60^\circ=\sqrt{3}$