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Generally you will be asked to find the root of an equation of the form F(x) = 0. In my answer below I will only touch on graphical methods, but will go into deeper detail on showing that a root lays in a...

Sin(x), Cos(x) and Tan(x) are very useful functions and can be used to solve algerbraic problems where the aim is to find the size of an angle or a size.

Sin(x) = Opposite/Hypotenuse

When faced with a problem that involves triangles, there is a simple flowchart you can follow to determine which formula or identity you need to use! Firstly you must ask yourself whether the triangle ...

This is a simultanious equation. As there are two unknown variables, it is impossible to find both a and b just using one of the equations. To make it possible to work out the unknowns, we need to have...