Advanced Trigonometry, SMB-032 Find every angle, \(\theta\), between \(0^{\circ} \leq \theta \leq 360^{\circ}\), for which \(\cos\,\theta=\dfrac{1}{2}\) (2 marks) --- 5 WORK AREA LINES (style=lined) --- Show Answers Only \(\theta=60^{\circ}, 300^{\circ}\) Show Worked Solution \(\text{Reference angle:}\ \ \cos\,\theta=\dfrac{1}{2}\ \ \Rightarrow \ \ \theta = 60^{\circ}\) \(\text{cos is positive in 1st/4th quadrants.}\) \(\theta=60^{\circ}, (360-60)^{\circ}=60^{\circ}, 300^{\circ}\)