Trigonometrical - Definitions from Dictionary.com

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Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This

trig·o·nom·e·try

Audio Help [trig-uh-nom-i-tree] Pronunciation Key

–noun

the branch of mathematics that deals with the relations between the sides and angles of plane or spherical triangles, and the calculations based on them.

[Origin: 1605–15; < NL trigōnometria; see trigon, -o-, -metry

]

—Related forms

trig·o·no·met·ric

Audio Help [trig-uh-nuh-me-trik] Pronunciation Key, trig·o·no·met·ri·cal, adjective

trig·o·no·met·ri·cal·ly, adverb

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

Encyclopædia Britannica, Inc.
Trigonometrical

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American Heritage Dictionary - Cite This Source - Share This

trig·o·nom·e·try Audio Help (trĭg'ə-nŏm'ĭ-trē) Pronunciation Key
n. The branch of mathematics that deals with the relationships between the sides and the angles of triangles and the calculations based on them, particularly the trigonometric functions.

[New Latin trigōnometria : Greek trigōnon, triangle; see trigon + Greek -metriā, -metry.]

trig'o·no·met'ric (-nə-mět'rĭk), trig'o·no·met'ri·cal (-rĭ-kəl) adj., trig'o·no·met'ri·cal·ly adv.

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