SOH CAH TOA is a way of remembering what the functions sin, cos, & tan mean in a right angle triangle.
With a triangle with one of the acute angles labelled (theta) the longest side H (Hypotenuse), the side opposite the labelled angle O, and the short side closest to the angle A (Adjacent)
SOH ->SIN(Theta)=0/H
CAH ->COS(Theta)=A/H
TOA ->TAN(Theta)=O/A
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