Trigonometry and Right-angled Triangles You should know how to use the trigonometric ratios (sine, cosine and tangent) in order to solve problems with right-angled triangles. Hypotenuse – the longest side of a right-angled triangle, it is always the side opposite the right-angle Opposite – the side opposite the known angle or the angle […]

## A Level Maths – prepare for success 5

Circle Properties The Basics Circumference – the perimeter of a circle Diameter – the distance across a circle, passing through the centre Radius – the distance from the centre of a circle to the circumference, plural of radius is radii Tangent – a straight that touches the circumference of the circle at a single […]