Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 1 - No. 40)
In a right-angled triangle, which side is adjacent to a given acute angle?
The hypotenuse
The side opposite the angle.
The side next to the angle (other than the hypotenuse).
The longest side
Explanation
The adjacent side is the side that forms the angle with the hypotenuse.