The Hypotenuse of a right-angled triangle is the longest side.
The Opposite is the side opposite the angle we want to find.
The Adjacent is the side next to the angle.
If we know 2 sides of a right-angled triangle we can use Trigonometry to workout the angles.If we know the Opposite and Hypotenuse we use sine to find the angle.
For example:If the Opp=3cm and Hyp= 5cm We find the angle (a) we want by using the equation.
Opposite/Hypotenuse = 3/5 = 0.6
Rearrange the equation to read like the folowing example:
a= Cos-1 0.923
a= 22.6 (This is the angle)