"SOHCAHTOA" is a helpful mnemonic for remembering the definitions of the trigonometric functions
sine,
cosine, and
tangent.
Sine = Opposite over Hypotenuse
Cosine = Adjacent over Hypotenuse
Tangent = Opposite over Adjacent
Other mnemonics include:
1. "Tommy On A Ship Of His Caught A Herring" (probably more common in Great Britain than the United States).
2. "Oscar Has A Hold On Angie."
3. "Oscar Had A Heap of Apples."
4. "The Old Army Colonel And His Son Often Hiccup" (which gives the functions in the order tangent, cosine, sine).
5. "Studying Our Homework Can Always Help To Obtain Achievement."
6. "Some Old Hippy Caught Another Hippy Tripping On Acid."
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Sohcahtoa is an abbreviation (SOH) sine opposite hypotenuse (CAH) cosine adjacent hypotenuse (TOA) tangent opposite adjacent.
It is a trigonometric equation for a right triangle, to find a non-right-angle angle. Using SOHCAHTOA, it is the opposite side divided by the adjacent angle
A way to remember the definitions of the three most common trigonometry functions: sin, cos and tan. Used as a memory aid for the definitions of the three common trigonometry functions sine, cosine and tangent.
A way of remembering how to compute the sine, cosine, and tangent of an angle. SOH stands for Sine equals Opposite over Hypotenuse. CAH stands for Cosine equals Adjacent over Hypotenuse. TOA stands for Tangent equals Opposite over Adjacent.