SIN Function

Returns the sine of the input variable.

result = SIN(x)

x The angle, in radians, that is evaluated.

result The trigonometric sine of x.

None.

If x is of double-precision floating-point or complex data type, SIN yields a result of the same type. All other types yield a single-precision floating-point result.

SIN handles complex numbers in the following way:

sin(x) complex((sin(r)cosh(i), cos(r)sinh(i))

where r and i are the real and imaginary parts of x.

If x is an array, the result of SIN has the same data type, with each element containing the sine of the corresponding element of x.

The following commands produce a dampened sine wave.

x = FINDGEN(200)
PLOT, 10000 * SIN(x/5) / EXP(x/100)

COS, COSH, SINH

For a list of other transcendental functions, see Transcendental Mathematical Functions in Volume 1 of this reference.