In this paper, we have defined rough neutrosophic hyper-complex set and rough neutrosophic hyper-complex cosine function
In order to overcome theses disadvantages, Ye  proposed improved cosine similarity measures based on cosine function
, including single valued neutrosophic cosine similarity measures and interval neutrosophic cosine similarity measures.
Overplotted is a cosine function
, cos ($4n), (see fig.
Fourier theory is that a signal can be used for a series of the cosine function
is cumulative and representation, but Fourier transform only the frequency resolution without time resolution.
If we compare this function to the Cosine function
of the traditional trigonometry we find that the Elliptic Jes function is the general case of the cosine function
and it is defined as following:
This can lead students to think that the angle is not important and that the angle for the sine function and the angle for the cosine function
need not agree for the identity to be true.
At the end of each rule statement, the rule was recited by all participants in unison: "When multiplying the cosine function
by a number greater than 1, the graph stretches along the y axis.
Errors are a function of angle and have maximum magnitude near the zeros of the cosine function
The angle of arrival referenced to the centre point of one sensor pair can be calculated using the inverse cosine function
In this experiment students investigate the graph of the cosine function
by measuring the thrust force as a function of the angle.
The diurnal variation of vertical ionospheric delay is modelled by a cosine function
, with varying amplitude and period, depending on the geomagnetic latitude.
Figure 5 shows the cosine function
compared to three commercial radiometers and FWT-60 radiachromic ("radiachromic") film.