The tangent is defined as the single point where a straight line meets a curved surface. The tangent can be determined with a collection of mathematical formulas but is most commonly determined by ...

It is important to remember other angles rules, such as angles on a straight line add up to 180°, and to recognise angles in parallel lines. Make sure you are confident in applying Pythagoras’ theorem ...

Two intersecting lines are tangent to two circles and form an angle of 74°. The circles have area ratios of 36 to 25. The distance from the point of tangency on the large circle to the point of ...