Problem 572


Explain the meaning of SOH of the mnemonic device SOH-CAH-TOA.




The mnemonic device of SOH-CAH-TOA represents the trigonometric ratios for the sine, cosine, and tangent functions. The sine of an angle is equal to the opposite side divided by the hypotenuse.


“SOHCAHTOA” is a helpful mnemonic for remembering the definitions of the trigonometric functions sine, cosine, and tangent i.e.,

sine equals opposite over hypotenuse,

cosine equals adjacent over hypotenuse,

and tangent equals opposite over adjacent

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