| Function | Result Value |
|---|---|
| COS(arg) | The cosine of arg in radians in the range -1 to 1, inclusive. |
| SIN(arg) | The sine of arg in radians in the range -1 to 1, inclusive. |
| TAN(arg) | The tangent of arg in radians. |
| ACOS(arg) | An angle in the range 0 to π radians, inclusive. |
| ASIN(arg) | An angle in the range -π /2 to π /2 radians, inclusive. |
| ATAN(arg) | An angle in the range -π /2 to π /2 radians, inclusive. |
| ATAN2(x,y) | An angle between -π and π radians, excluding -π. A positive result represents a counterclockwise angle from the x-axis. A negative result represents a clockwise angle. ATAN2(x,y) equals ATAN(y/x), except that x can be 0 in ATAN2(x,y) and x cannot be 0 in ATAN(y/x) since this results in a divide by zero error. If both x and y are 0, an error is returned. |