Sine

The functions sine and cosine take values between -1 and 1 (-1 and 1 included).

"Eh? Is the tangent cosine divided by sine?" "Other way round!"

Additive synthesis involves manually controlling harmonics, and uses only sine waves.

The functions sine and cosine have a range of values between -1 and 1, inclusive.

Grammar and usage are the sine qua non of language teaching and learning.

In this graph, you can see that the sine of θ is always equal to the Y position of point A, and that the tangent of θ is always equal to the slope of the line intersecting point A and the origin.

A driving licence is a sine qua non here.

The rational parametrisation of a circle is almost always far superior to the usual parametrisation in terms of cosine and sine.

The trigonometric functions sine, cosine, and tangent relate the various sides and angles of a triangle.

The sine and cosine functions both satisfy this property.