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| asin(1) / pi = 0.5 | tan(1 rad) = 1.557407725 | sin(45 deg)^2 = 0.5 |
| Function | Description |
|---|---|
| acos(x) | Calculate the inverse cosine of a value. |
| acosh(x) | Calculate the hyperbolic arccos of a value, defined as acosh(x) = ln(sqrt(x^2 - 1) + x). |
| acot(x) | Calculate the inverse cotangent of a value, defined as acot(x) = atan(1/x). |
| acoth(x) | Calculate the hyperbolic arccotangent of a value, defined as acoth(x) = atanh(1/x) = (ln((x+1)/x) + ln(x/(x-1))) / 2. |
| acsc(x) | Calculate the inverse cosecant of a value, defined as acsc(x) = asin(1/x). |
| acsch(x) | Calculate the hyperbolic arccosecant of a value, defined as acsch(x) = asinh(1/x) = ln(1/x + sqrt(1/x^2 + 1)). |
| asec(x) | Calculate the inverse secant of a value. |
| asech(x) | Calculate the hyperbolic arcsecant of a value, defined as asech(x) = acosh(1/x) = ln(sqrt(1/x^2 - 1) + 1/x). |
| asin(x) | Calculate the inverse sine of a value. |
| asinh(x) | Calculate the hyperbolic arcsine of a value, defined as asinh(x) = ln(x + sqrt(x^2 + 1)). |
| atan(x) | Calculate the inverse tangent of a value. |
| atan2(y, x) | Calculate the inverse tangent function with two arguments, y/x. |
| atanh(x) | Calculate the hyperbolic arctangent of a value, defined as atanh(x) = ln((1 + x)/(1 - x)) / 2. |
| cos(x) | Calculate the cosine of a value. |
| cosh(x) | Calculate the hyperbolic cosine of a value, defined as cosh(x) = 1/2 * (exp(x) + exp(-x)). |
| cot(x) | Calculate the cotangent of a value. |
| coth(x) | Calculate the hyperbolic cotangent of a value, defined as coth(x) = 1 / tanh(x). |
| csc(x) | Calculate the cosecant of a value, defined as csc(x) = 1/sin(x). |
| csch(x) | Calculate the hyperbolic cosecant of a value, defined as csch(x) = 1 / sinh(x). |
| sec(x) | Calculate the secant of a value, defined as sec(x) = 1/cos(x). |
| sech(x) | Calculate the hyperbolic secant of a value, defined as sech(x) = 1 / cosh(x). |
| sin(x) | Calculate the sine of a value. |
| sinh(x) | Calculate the hyperbolic sine of a value, defined as sinh(x) = 1/2 * (exp(x) - exp(-x)). |
| tan(x) | Calculate the tangent of a value. |
| tanh(x) | Calculate the hyperbolic tangent of a value, defined as tanh(x) = (exp(2 * x) - 1) / (exp(2 * x) + 1). |
| Base | Unit |
|---|---|
| Length | meter (m), inch (in), foot (ft), yard (yd), mile (mi), link (li), rod (rd), chain (ch), angstrom, mil |
| Surface area | m2, sqin, sqft, sqyd, sqmi, sqrd, sqch, sqmil, acre, hectare |
| Volume | m3, litre (l, L, lt, liter), cc, cuin, cuft, cuyd, teaspoon, tablespoon |
| Liquid volume | minim (min), fluiddram (fldr), fluidounce (floz), gill (gi), cup (cp), pint (pt), quart (qt), gallon (gal), beerbarrel (bbl), oilbarrel (obl), hogshead, drop (gtt) |
| Angles | rad (radian), deg (degree), grad (gradian), cycle, arcsec (arcsecond), arcmin (arcminute) |
| Time | second (s, secs, seconds), minute (mins, minutes), hour (h, hr, hrs, hours), day (days), week (weeks), month (months), year (years), decade (decades), century (centuries), millennium (millennia) |
| Frequency | hertz (Hz) |
| Mass | gram(g), tonne, ton, grain (gr), dram (dr), ounce (oz), poundmass (lbm, lb, lbs), hundredweight (cwt), stick, stone |
| Electric current | ampere (A) |
| Temperature | kelvin (K), celsius (degC), fahrenheit (degF), rankine (degR) |
| Amount of substance | mole (mol) |
| Luminous intensity | candela (cd) |
| Force | newton (N), dyne (dyn), poundforce (lbf), kip |
| Energy | joule (J), erg, Wh, BTU, electronvolt (eV) |
| Power | watt (W), hp |
| Pressure | Pa, psi, atm, torr, bar, mmHg, mmH2O, cmH2O |
| Electricity and magnetism | ampere (A), coulomb (C), watt (W), volt (V), ohm, farad (F), weber (Wb), tesla (T), henry (H), siemens (S), electronvolt (eV) |
| Binary | bit (b), byte (B) |