Trigonometry
Trigonometry is a concept which shows the relationship between the sides and angles in a right angled triangle. This helps us to find unknown sides and angles when we have limited information. But to before we get into this, we need to learn how to label the sides of a triangle in trigonometry. The side opposite to the right angle (the longest side of the triangle) is called the hypotenuse, How the other 2 sides are labelled depends on the angle we choose (other than the right-angle). the side opposite to the angle chosen is called 'opposite' and the remaining angle is called 'adjacent'. Here, the angle opposite to the angle in blue, which we are considering as the angle we need, is labelled 'opposite' and the remaining angle 'adjacent'. However, should the angle needed change, these 2 labels also change. Now that we know how to label, lets look at the relationship between these. There are 3 formulas that defines this for us which can be quite easily