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cosine Definition

co·sine (sīn′)

noun

the reciprocal of the secant; specif.

  1. the ratio of the adjacent side of a given acute angle in a right triangle to the hypotenuse
  2. an equivalent, positive or negative ratio for certain related angles (Ex.: the cosine of 57° or 303° is .5446, of 123° or 237° is -.5446) or real numbers representing radians (Ex.: cosine of .9948 radians (57°) is .5446)

Etymology: ModL < co. sinus, short for complementi sinus, lit., sine of the complement

cosine Usage Examples

Preposition: of

  • angle: Math Returns the arc cosine of an angle, in the range of 0.0 through pi.
  • latitude: Each grid box was weighted by surface area, using the cosine of the latitude.
  • axis: Each time a line or plane is computed, the direction cosines of the relevent axis are stored as AXIS number ' n ' .
  • r1: FSINCOS ANS r1 - r2 r3 r2 is the sine of the radian angle r1. r3 is the cosine of the radian angle r1.

Converse of object

  • return: Returns: the sine of the argument. cos public static double cos ( double a ) Returns the trigonometric cosine of an angle.
  • use: Each grid box was weighted by surface area, using the cosine of the latitude.

Adjective modifier

  • inverse: The inverse cosine is defined only in the domain from ` -1 ' to ` 1 ' .
  • discrete: Relative to the number of elements in the detector the discrete cosine proves inefficient, particularly with regard to modulation information.
  • arc: Math Returns the arc cosine of an angle, in the range of 0.0 through pi.
  • trigonometric: Returns: the sine of the argument. cos public static double cos ( double a ) Returns the trigonometric cosine of an angle.
  • half-period: The one we present here is simply the addition of four half-period cosines.

Modifies a noun

  • similarity: Using TF-IDF in conjunction with the cosine similarity function seemed well suited for our context determination task.
  • wave: Frequency analysis ) we only talk about the frequency of a sine or cosine wave.
  • function: So we might think the sine and cosine functions could have the same values that they had for the first triangle.
  • rule: An example of this can be seen with the cosine rule.
  • series: Laplace had devised a method involving cosine series for computing the perturbing force on a planet caused by other planets.
  • bell: Both the effects of the cosine bell and the subtraction of the mean level are reversed at the end of the sequence.

Noun used with modifier

  • direction: This assumes you have an HKL file with direction cosines.
  • arc: The result is in the range of - pi /2 through pi /2. acos( x ) Arc cosine of an angle.
  • frequency: Note that index 1 is for the higest frequency cosine instead of the 0 frequency sin.

Browse dictionary entries near cosine

  1. cosigner
  2. cosignatory
  3. cosign
  4. cosher
  5. cosh
  6. cosey
  7. Cosenza
  8. coseismal
  9. cosecant
  10. cosec
  1. cosmetic
  2. cosmetician
  3. cosmeticize
  4. cosmetology
  5. cosmic
  6. cosmic dust
  7. cosmic noise
  8. cosmic rays
  9. cosmo-
  10. cosmogony