#### 7.7.3 Trigonometric Functions ¶

Trigonometric functions take numeric arguments and produce numeric results.

Function: ARCOS `(number)` ¶
Function: ACOS `(number)` ¶

  Takes the arccosine, in radians, of number. Results in system-missing if number is not between -1 and 1 inclusive. This function is a PSPP extension.

Function: ARSIN `(number)` ¶
Function: ASIN `(number)` ¶

  Takes the arcsine, in radians, of number. Results in system-missing if number is not between -1 and 1 inclusive.

Function: ARTAN `(number)` ¶
Function: ATAN `(number)` ¶

  Takes the arctangent, in radians, of number.

Function: COS `(angle)` ¶

  Takes the cosine of angle which should be in radians.

Function: SIN `(angle)` ¶

  Takes the sine of angle which should be in radians.

Function: TAN `(angle)` ¶

  Takes the tangent of angle which should be in radians. Results in system-missing at values of angle that are too close to odd multiples of \pi/2. Portability: none.