When considering an angle in a right angled triangle, the adjacent is the short side next to the angle and the hypotenuse is the long one (which will be opposite the right angle)
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adjacent, opposite and hypotenuse
the longest side of a right angle is called the hypotenuse. In trigonometry it is the side that is opposite the adjacent. -----------|\ -----------| \ Adjacent-| -\ hypotenuse (longest side) -----------|- \ -----------|__ \ ---------opposite
Sin= Opposite/Hypotenuse Cos= Adjacent/Hypotenuse Tan= Opposite/Adjacent
It means for any right angle triangle:- sine = opposte/hypotenuse cosine = adjacent/hypotenuse tangent = opposite/adjacent
For a right angle triangle:- hypotenuse = adjacent/cosine or hypotenuse = opposite/sine