Sine Wave

(redirected from Cosine curve)
Also found in: Dictionary, Thesaurus, Medical, Encyclopedia.

Sine Wave

Any curve plotted along an axis where the y-value moves above and below zero at a rate of y = sin(x). The Composite Index of Lagging Indicators is thought to be roughly a sine wave because interest rates and inflation, which make up the index, move in relation to each other in a way resembling the sine.
References in periodicals archive ?
(A), Mean [+ or-] SEM 25-h hs-cTnT profile and fitted cosine curve. Participants slept in a supine position between 11:30 PM-7:00 AM (shaded area).
Figure 1 demonstrates that the annulus development coefficient a(k) fluctuates above and below the value 0 in a sine or cosine curve; thus, the superposition of sine and cosine can be used to fit the fluctuation of the annulus development coefficient.
Analysis of variance table from the cosine curve model for birth probabilities from the capybara hunting data Main Degrees of F-ratio Significant effects Freedom Level cos (2nt/12) 1 3.69 0.08 sin (2nt/12) 1 0.26 0.62 Total 2 1.84 0.21 Residual 9 -- -- Total 11 -- --