co·sine ˈkō-ˌsīn : a trigonometric function that is the ratio between the side next to an acute angle in a right triangle and the hypotenuse More from Merriam-Webster on cosine Britannica.com: Encyclopedia article about cosine Love...
and two terms you might remember from math class:sineandcosine. In English,sinusis the oldest of these words; it entered the language in the 1400s.Insinuateappeared next, in the early 1500s, and was followed bysinuousandsinein the latter half of the 1500s, andcosinein the 1600s.Serpent...
Learn the definition of Sine/cosine and browse a collection of 15 enlightening community discussions around the topic.
What is Sine? sine The three main trigonometric functions are sin, cosine, and tangent. The formulas for each of these can be remembered using the pneumonic SOH-CAH-TOA: SOH:sine is equal toopposite overhypotenuse CAH:cosine is equal toadjacent overhypotenuse ...
Because the abscissa of points in the first and fourth quadrants are positive, the cosine function is positive on[0,π/2)and(2π/3,2π]. With similar reasoning, it can be concluded that the function is negative on(π/2,3π/2). ...
To extend the sine and cosine functions to functions whose...- then the top edge of the bar will be tilted by the same amount forming an angle that may be calculated by the application of the sine rule. The hypotenuse...- an angle or plane angle is the figure formed by two rays, ...
The reciprocal of the cotangent is the tangent: 1/cot A = tan A. Graphs of some trigonometric functionsNote that each of these functions is periodic. Thus, the sine and cosine functions repeat every 2π, and the tangent and cotangent functions repeat every π.(more) If a circle with radi...
The cosine is a fundamental trigonometric function such that the cosine of an angle of a right triangle is the ratio of its adjacent side to the hypotenuse.
He proposed that all periodic functions — all periodic phenomena — could be understood as sums of sine and cosine waves. FromNew York Times And not once in the 40 years since I finished school have I ever been asked to factor a polynomial or calculate the cosine of anything. ...
sine θ = opposite / hypotenuse cosine θ = adjacent / hypotenuse tangent θ = opposite / adjacent. trigonometric function n. A function of an angle expressed as the ratio of two of the sides of a right triangle that contains that angle; the sine, cosine, tangent, cotangent, secant, or ...