co‧sine /ˈkəʊsaɪn $ ˈkoʊ-/
noun [countable] technical[
Date: 1600-1700;
Language: Modern Latin;
Origin: cosinus, from co- + Medieval Latin sinus ( ⇒ sine)]
the measurement of an
acute angle in a
triangle with a
right angle, that is calculated by dividing the length of the side next to it by the length of the
hypotenuse ⇒
sine [TahlilGaran] Dictionary of Contemporary English ▲