A parallelogram ABCD ABCD\,ABCD has area 55 cm2^22.
AB AB\,AB has length 5 cm, BC BC\,BC has length 12 cm, and angle ABC ABC\,ABC is obtuse.
Find the size of angle ABCABCABC, giving your answer to 2 decimal places.
Find the length of the diagonal ACACAC, giving your answer to 1 decimal place.
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.