April 19, 1991 SIN 3

### NAME

sin, sinf - sine function

### LIBRARY

Math Library (libm, -lm)

### SYNOPSIS

```double` sin(```double x`)
```float` sinf(```float x`)

### DESCRIPTION

The sin(``) function computes the sine of ```x` (measured in radians). A large magnitude argument may yield a result with little or no significance.

### RETURN VALUES

The sin(``) function returns the sine value.

### SEE ALSO

acos(3), asin(3), atan(3), atan2(3), cos(3), cosh(3), math(3), sinh(3), tan(3), tanh(3)

### STANDARDS

The sin(``) function conforms to ANSI X3.159-1989 (``ANSI C89'') .