
A right-angled triangle ABC ABC\,ABC is shown. The right angle is at vertex BBB, indicated by a small square. Vertex A A\,A is below BBB, and vertex C C\,C is to the right of BBB. The angle at vertex A A\,A is labeled 42∘42^\circ42∘. The hypotenuse AC AC\,AC is labeled 15 cm.
Calculate the length ABABAB.
Practise OCR GCSE Maths SOHCAHTOA (Trigonometry) with exam-style questions for Foundation and Higher tier. 43 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers 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.