When we have a right-angled triangle, as shown below, we can
name each side for the angel o as the following:
Hypotenuse: the side opposite the right angle
Adjacent: the side next to θ
Opposite: the side furthest from the angle
We
can than define the three trigonometric rations as sine θ,
cosine θ and tangent θ as follows:
To help remember these you can use SOHCAHTOA
Sin θ = Opposite / Hypotenuse (SOH)
Cos θ = Adjacent / Hypotenuse (CAH)
Tan θ = Opposite / Adjacent (TOA)
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