This means that, using Pythagoras’ theorem, the equation of a circle with radius \(r\) and centre (0, 0) is given by the formula \(x^2+ y^2= r^2\). Find the equation of a circle with radius 3 ...

The tangent is perpendicular to the radius which joins the centre of the circle to the point P. As the tangent is a straight line, the equation of the tangent will be of the form \(y = mx + c\).

To help teachers and parents during school closures, we have created free packs of worksheets that children can complete at home with help from a grown-up. The packs contain science, English and maths ...

To mathematicians, equations are art. Just as many are moved by a painting or piece of music, to those who appreciate and understand math, expressions of numbers, variables, operations and ...

Work out a proposed household budget by inputting your sources of income and projected expenses into Kiplinger's exclusive worksheet below. You can add and delete rows as necessary to reflect your ...

May 14, 2024 • Jessika Van (Seoul Searching, Awkward) and Mark Pellegrino (American Rust, Beverly Hills Cop: Axel Foley) co-star in a Welsh tale about a girl, a drought, and a mouse with a life ...

Our Human Evolution gallery explores the origins of Homo sapiens, tracing our lineage since it split from that of our closest living relatives, the chimpanzee and the bonobo. Gallery developer Jenny ...

Amanda Bellucco-Chatham is an editor, writer, and fact-checker with years of experience researching personal finance topics. Specialties include general financial planning, career development ...

National Rugby League respects and honours the Traditional Custodians of the land and pay our respects to their Elders past, present and future. We acknowledge the stories, traditions and living ...

Google is working to bring onscreen barcode and QR code scanning features to Circle to Search. We now have a working demo of the feature. An APK teardown helps predict features that may arrive on ...

Tom Trbojevic makes a break during game two of the 2021 State of Origin series. (Photo by Chris Hyde/Getty Images)Source: Getty Images While Trbojevic has played plenty of rep games at centre ...