Function Names
sin, sin deg, cos, cos deg, tan, tan deg, asin, asin deg, acos, acos deg, atan, atan degDescription
All common trigonometric functions are supported. The function names ending with deg use angle measures in degrees and not in radians.
| Radian based | Degree based | Function description |
|---|---|---|
| sin | sin deg | Sine |
| cos | cos deg | Cosine |
| tan | tan deg | Tangent |
| asin | asin deg | Arcsine (inverse sine) |
| acos | acos deg | Arccosine (inverse cosine) |
| atan | atan deg | Arctangent (inverse tangent) |
Call as: function
Restrictions
Indirect parameter passing is disabled
Parameter count
1
Parameters
| No. | Type | Description |
|---|---|---|
| 1 input |
numeral | Angle or value Value to be raised to the power exponent |
Return value
| Type | Description |
|---|---|
| numeral | Result Calculated value |
Exceptions
For selected functions (e.g. asin): Values are outside valid range
Examples
pi[] = asin(1)*2;
echo( cos( pi[] / 4 ) ); // 45 deg.
echo( sin deg( 30 ) ); // 30 deg.
echo( asin deg( 1 ) ); // 90 deg.Output
0.7071067812
0.5
90