sine 音标拼音: [s'ɑɪn]
n . 正弦
正弦
sine 半正弦
sine 正弦
sine 正弦
sine n 1 :
ratio of the length of the side opposite the given angle to the length of the hypotenuse of a right -
angled triangle [
synonym : {
sine }, {
sin }]
Sine \
Sine \,
n . [
LL .
sinus a sine ,
L .
sinus bosom ,
used in translating the Ar .
jaib ,
properly ,
bosom ,
but probably read by mistake (
the consonants being the same )
for an original j [
imac ]
ba sine ,
from Skr .
j [
imac ]
va bowstring ,
chord of an arc ,
sine .] (
Trig .)
(
a )
The length of a perpendicular drawn from one extremity of an arc of a circle to the diameter drawn through the other extremity .
(
b )
The perpendicular itself .
See {
Sine of angle },
below .
[
1913 Webster ]
{
Artificial sines },
logarithms of the natural sines ,
or logarithmic sines .
{
Curve of sines }.
See {
Sinusoid }.
{
Natural sines },
the decimals expressing the values of the sines ,
the radius being unity .
{
Sine of an angle },
in a circle whose radius is unity ,
the sine of the arc that measures the angle ;
in a right -
angled triangle ,
the side opposite the given angle divided by the hypotenuse .
See {
Trigonometrical function },
under {
Function }.
{
Versed sine },
that part of the diameter between the sine and the arc .
[
1913 Webster ]
Sine \
Si "
ne \,
prep . [
L .]
Without .
[
1913 Webster ]
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Trigonometric functions - Wikipedia For an angle which, measured in degrees, is a multiple of three, the exact trigonometric values of the sine and the cosine may be expressed in terms of square roots These values of the sine and the cosine may thus be constructed by ruler and compass
Sine Function (sin θ): Definition, Formula Unit Circle Examples Sine is opposite over hypotenuse, cosine is adjacent over hypotenuse, and tangent is opposite over adjacent They are related by the identity tan θ = sin θ cos θ
Sine, Cosine, Tangent, explained and with Examples and practice . . . This page explains the sine, cosine, tangent ratio, gives on an overview of their range of values and provides many practice problems on identifying the sides that are opposite and adjacent to a given angle