Difference between revisions of "Trigonometry"
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m (angles and triangles) |
(a little joke for the students) |
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These functions are defined by reference to a "right triangle," which is a triangle in which one angle is 90 degrees. | These functions are defined by reference to a "right triangle," which is a triangle in which one angle is 90 degrees. | ||
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| + | A way to remember the relationsships is the mnemonic SOH-CAH-TOA ("soak a toe"). Think of a man soaking his toe in a tub of water - preferably a three-sided tub! | ||
Revision as of 16:28, April 18, 2007
Trigonometry is the study of angles and triangles, relying heavily on three basic functions: sine, cosine and tangent. These functions are abbreviated as "sin", "cos" and "tan".
These functions are defined by reference to a "right triangle," which is a triangle in which one angle is 90 degrees.
A way to remember the relationsships is the mnemonic SOH-CAH-TOA ("soak a toe"). Think of a man soaking his toe in a tub of water - preferably a three-sided tub!