Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 3 - No. 10)
In trigonometry, what does 'adjacent' refer to in relation to an angle in a right triangle?
The side opposite the angle
The side next to the angle, not the hypotenuse
The hypotenuse
The longest side of the triangle
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Adjacent side is next to the angle.