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arboreal
arboreous
arborescent
arboretum
arboriculture
arborio
arborise
arborist
arborize
arborvitae
arbour
arbovirus
arbutus
ARC
arc
arc cosecant
arc cosine
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arc tangent
arc tan·gent (plural arc tan·gents)


noun 
Definition:
 
mathematics inverse tangent: the inverse of the tangent function
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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