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sine

sine

9 6.7
A number equal to the length of the side opposite an angle divided by the hypotenuse in a right triangle
  • noun
  • /saɪn/
  • Specialized
translation icon : seno
  • The peak-to-peak voltage of the sine wave was verified using a digital voltmeter and oscilloscope.
  • sine wave
  • sine function
  • sine and cosine

So you will use those to evaluate sine, cosine, and tangent.

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Examples

  • Take the inverse sine to calculate the angle. Pre-formatted table Step 5.

    Academic text (2011)
  • The integral of sine is negative cosine.

  • What is the average value of that sine function?

  • Now you would think the sine wave would look clean, but not quite.

  • When you go below the X axis, sine is negative, right?

  • It's the product of sine of the angle and gravity divided by mass.

  • So you could use XN plus one equals sine X for example.

  • The force here will be T times sine Theta plus delta Theta.

  • Sine A equals BC over AB equals the perpendicular over the hypotenuse.

  • In a right triangle, the sine of an angle is the ratio of the length of the opposite side to the length of the hypotenuse.

Synonyms

sin
vssine
  • Specialized
9 8.1

The number you get when you divide the side opposite an angle by the longest side in a right triangle

also denotes the trigonometric function of an angle, not only the side ratio

Idioms

sine die
  • Formal
1 9.9

With no date set to meet again

Compounds

sine wave
  • Specialized
3 5.1

A smooth repeating wave that goes up and down in a regular curved line

sine qua non
  • Formal
3 9.9

Something that must exist for something else to work

arc sine
  • Specialized
1 8.7

An angle whose sine is a given number

sine curve
  • Specialized
1 6.8

A smooth wavy graph that repeats regularly, for example y = sin x

inverse sine
  • Specialized
8.0

A way to find the angle whose sine equals a given number

An action is not a crime unless a law says it is

Surface Forms

sine singular
sines plural

Etymology

Sine has a long history: an old Sanskrit word jya-ardha meaning 'half-chord' was written in Arabic as jayb ('fold' or 'pocket'), and Latin used sinus ('bay' or 'curve'), which became the modern sine. So sine is named for the curved wave or 'fold' the function makes on a graph, and that image can help you remember its meaning.