ParameterTypexdecimal, doubleReturns: decimalExamplequery: SELECT ACOS(1) siyeh/sql-crm-example-data Run query Copy code results: acos 0.00 Related: ABS, ASIN, ATAN, ATAN2, CEILING, COS, COSH, DEGREES, EXP, EXP10, FLOOR, LOG, LOG10, MOD, PI, POW, RADIANS, ROUND, SIGN, SIN, SINH, SQRT, TAN, TANH, TRUNC