abbreviated as “sin”.
In the triangle shown, .
The sine ratio is the same regardless of the size of the right triangle. So, it is often easiest to consider a right triangle with a hypotenuse of length .
The sine ratio can also be thought of as a function, which takes different values depending on the measure of the angle. You can measure an angle in degrees or radians .
The reciprocal of the sine ratio is known as cosecant ratio of an angle, abbreviated as "cosec".
In the above example, .