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Line 1: − − A mathematical identity involving sine is: − − <math>\sin \theta = \cos \left(\frac{\pi}{2} - \theta \right) = \frac{1}{\csc \theta}\,</math> − + Line 32:
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fixing to follow the pattern of the cosine page, which is particularly well laid out.
'''Sine''' is a [[trigonometric function]] describing the [[ratio]] between the opposite side and the [[hypotenuse]] in a [[right triangle]]. As a function it is usually abbreviated ''sin''.
'''Sine''' is a [[trigonometric function]] describing the [[ratio]] between the opposite side and the [[hypotenuse]] in a [[right triangle]]. As a function it is usually abbreviated ''sin''.
==Sine Graph==
==Sine Graph==
The basic sine graph is as follow:
The basic sine graph is as follows:
{| style="background:none"
{| style="background:none"
|
|
|}
|}
That would be a full period of the graph - as 2π [[radians]] is equivalent to one circle. The graph continues in that pattern.
That would be a full period of the graph - as 2π [[radians]] is equivalent to one circle. The graph continues in that pattern.
== Relationship to cosine and cosecant ==
A mathematical identity involving sine is:
<math>\sin \theta = \cos \left(\frac{\pi}{2} - \theta \right) = \frac{1}{\csc \theta}\,</math>
[[Category:Trigonometry]]
[[Category:Trigonometry]]