\(\begin{aligned}\href{/posts/sine}{\sin}(\alpha) &= \frac{\text{opposite}}{\text{hypotenuse}} \\ &= \href{/posts/tangent}{\tan}(\alpha)\href{/posts/cosine}{\cos}(\alpha)\end{aligned}\)

Also see Cosine and Tangent (Geometry).

(“Sine and Cosine” 2022)

Graph of \(\href{/posts/sine}{\sin}\)

References

“Sine and Cosine.” 2022. Wikipedia, August. https://en.wikipedia.org/w/index.php?title=Sine_and_cosine&oldid=1103922899.