**Trigonometry Trig**

The study of triangles, with emphasis on calculations involving the lengths of sides and the measures of angles. Trigonometry is also known as trig.

Trigonometry is based on the six functionssine, cosine, tangent, cosecant, secant, and cotangent. Trig also includes studies of the properties of these functions and their graphs.

Finally, trig involves the analysis of circles and periodic motion.

**See also**

Trig functions, trig identities, SOHCAHTOA, circle trig definitions, unit circle trig definitions, special angles, trig values of special angles, inverse trigonometry, law of cosines, law of sines

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