Syntax

1. <trigonometric_function> ::=
     COS ( <expression> )
   | SIN ( <expression> )
   | TAN ( <expression> )
   | COT ( <expression> )
   | COSH ( <expression> )
   | SINH ( <expression> )
   | TANH ( <expression> )
   | ACOS ( <expression> )
   | ASIN ( <expression> )
   | ATAN ( <expression> )
   | ATAN2 ( <expression>, <expression>)
   | RADIANS ( <expression> )
   | DEGREES ( <expression> )