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First, you have to work out whether the side you need to find is the hypotenuse or not. The hypotenuse is the longest side of the triangle, opposite the right angle. For this question, you use Pythagoras'...

There are many possible ways to structure an exam style essay, but this is the format I find most effective: 1. IntroductionYou must directly introduce your line of argument in response to the question, i...

Sometimes you are asked to solve simultaneous equations where one of the equations has an x² and/or a y² in it - this is called a non-linear equation. This kind of question can lo...

You must first identify the names of the two sides in relation to the angle you are trying to find out. The technique "sohcahtoa" is generally very helpful in working this out. This abbreviat...

You must first identify which sides you are given. If you have been given both sides which are not the hypotenuse (the longest side opposite the ninety degree angle) then you can use the equation: