Adjacent angles are one of the earliest and most important concepts to learn in basic geometry, as they have applications in further subjects like trigonometry, physics, and engineering.

The sides of right-angled triangles are labelled opposite, hypotenuse and adjacent. Trigonometry explores the relationship between sides and angles in right-angled triangles. The hypotenuse is the ...

frac {opposite} {adjacent}\) Adjacent, opposite and hypotenuse signify the length of these sides respectively. \(\text{θ}\) signifies the size of the angle in the triangle. If we know one of the ...