In triangle ACDACDACD, angle CAD=60°CAD = 60°CAD=60°, AD=15AD = 15AD=15 cm and CD=13CD = 13CD=13 cm.
Show that there are two possible values for the length ACACAC, and find them.
Hence state the two possible areas of triangle ACDACDACD, giving your answers to 3 significant figures.
97 exam-style questions on WJEC A Level Maths 1.5 Trigonometry, covering 1.5.1 Trigonometry, 1.5.2 Trigonometry, 1.5.3 Trigonometry, 1.5.4 Trigonometry, and 1.5.5 Trigonometry. Each one has a worked solution and a mark scheme showing where the marks go.