Trigonometry, 2ADV EQ-Bank 5 Find the exact value of \(\sin 240^{\circ}\) (1 mark) --- 2 WORK AREA LINES (style=lined) --- \(\tan \left(-120^{\circ}\right)\) (1 mark) --- 5 WORK AREA LINES (style=lined) --- Show Answers Only a. \(-\dfrac{\sqrt{3}}{2}\) b. \(\sqrt{3}\) Show Worked Solution a. \(\sin 240^{\circ}=\sin (180+60)=-\sin 60^{\circ}=-\dfrac{\sqrt{3}}{2}\) b. \(\tan \left(-120^{\circ}\right)=\tan 240^{\circ}\) \(\tan 240^{\circ}=\tan (180 + 60)=\tan 60^{\circ}=\sqrt{3}\)