Two concentric arcs form the curved edges of an annular sector. The outer radius is 3 cm greater than the inner radius. The outer arc is 4 cm longer than the inner arc, and the sum of the two arc lengths is 28 cm.
Find the angle of the sector in radians and the two radii.
Find the area of the annular sector.
221 exam-style questions on CCEA A Level Maths 3.4 Trigonometry (A-level only), covering 3.4.1 Trigonometry (A-level only), 3.4.2 Trigonometry (A-level only), 3.4.3 Trigonometry (A-level only), 3.4.4 Trigonometry (A-level only), 3.4.5 Trigonometry (A-level only), 3.4.6 Trigonometry (A-level only), 3.4.7 Trigonometry (A-level only), and 3.4.8 Trigonometry (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.