Sin function

[siddhi-mailoorkar-b81eb9fd (Siddhi Mailoorkar)]

Understanding to Sin function.

[ruble-joseph]

Trigonometric function

[chirag-garg]

Sin() is a trigonometric function that takes an angle (in degree or radian measure) and returns a ratio. Therefore, something needs to go inside the parentheses for sin() to have a value. It the ratio of the opposite leg of the triangle over the hypotenuse.