Merge pull request #19942 from WilliamAntonRohm/issue-6641

sql-docs/issues/6641 -- clarify bounds exception

Author: PRMerger9

docs/t-sql/functions/acos-transact-sql.md

@@ -39,7 +39,7 @@ ACOS ( float_expression )
 
 ## Arguments
 *float_expression*  
-An [expression](../../t-sql/language-elements/expressions-transact-sql.md) of either type **float** or of a type that can implicitly convert to float. Only a value ranging from -1.00 to 1.00 is valid. Values outside this range return NULL, and ASIN will report a domain error.
+An [expression](../../t-sql/language-elements/expressions-transact-sql.md) of either type **float** or of a type that can implicitly convert to float. Only a value ranging from -1.00 to 1.00 is valid. For values outside this range, no value is returned, and ACOS will report a domain error.
 
 ## Return Types  
 **float**

docs/t-sql/functions/asin-transact-sql.md

@@ -39,7 +39,7 @@ ASIN ( float_expression )
 
 ## Arguments
 *float_expression*  
-An [expression](../../t-sql/language-elements/expressions-transact-sql.md) of either type **float** or of a type that can implicitly convert to float. Only a value ranging from -1.00 to 1.00 is valid. Values outside this range return NULL, and ASIN will report a domain error.
+An [expression](../../t-sql/language-elements/expressions-transact-sql.md) of either type **float** or of a type that can implicitly convert to float. Only a value ranging from -1.00 to 1.00 is valid. For values outside this range, no value is returned, and ASIN will report a domain error.
 
 ## Return types
 **float**