Search results
Jun 15, 2024 · cousin (plural cousins) Chiefly with a qualifying word: Any relation (especially a distant one) who is not a direct ancestor or descendant but part of a person 's extended family; a kinsman or kinswoman . (specifically) Preceded by an ordinal number, as first, second, third, etc.: a person descended from a common ancestor by the same number of ...
In Figure 2.2.1, the cosine is equal to x. Figure 2.2.3. Because it is understood that sine and cosine are functions, we do not always need to write them with parentheses: sint is the same as sin(t) and cost is the same as cos(t). Likewise, cos2t is a commonly used shorthand notation for (cos(t))2.
COUSIN definition: the child of your aunt or uncle. Learn more.
Defining the cosine function. The cosine function is one of the oldest mathematical functions. It was first used in ancient Egypt in the book of Ahmes (c. 2000 B.C.). Much later F. Viète (1590) evaluated some values of , E. Gunter (1636) introduced the notation "Cosi" and the word "cosinus" (replacing "complementi sinus"), and I. Newton (1658 ...
Definition: sine and cosine. For the point ( x, y) on a circle of radius r at an angle of θ in standard position, we can define two important functions as the ratios of the sides of the corresponding triangle: The sine function: sin(θ) = y r. The cosine function: cos(θ) = x r.
a child of your aunt or uncle. She's my cousin. We're cousins. This is my cousin Richard. He's a cousin once removed (= separated by one generation of our family).; She's a cousin of the bride.
Law of cosines. Fig. 1 – A triangle. The angles α (or A ), β (or B ), and γ (or C) are respectively opposite the sides a, b, and c. In trigonometry, the law of cosines (also known as the cosine formula or cosine rule) relates the lengths of the sides of a triangle to the cosine of one of its angles. For a triangle with sides and opposite ...
