
A right-angled triangle ABC ABC\,ABC is shown. The right angle is at vertex BBB, indicated by a small square. Side AB AB\,AB is vertical and labeled 5 mm. Side BC BC\,BC is horizontal. Hypotenuse AC AC\,AC is labeled 16 mm.
Calculate the size of angle ACBACBACB.
Practise Edexcel GCSE Maths SOHCAHTOA (Trigonometry) with exam-style questions for Foundation and Higher tier. 43 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.