As nouns the difference between theta and cos
is that theta is the name for the eighth letter οf the Modern Greek alphabet, ninth in Old Greek while cos is a variety of lettuce with long, crisp leaves.
As a conjunction cos is
because.
As a proper noun Cos is
an island of the Dodecanese, Greece.
theta
English
Noun
(
en noun)
the name for the eighth letter ?f the Modern Greek alphabet, ninth in Old Greek.
(mathematics) The measure of an angle.
Derived terms
* theta wave
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cos
Translingual
Symbol
(head)
a symbol of the trigonometric function cosine.
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