I am confused about why people think the SQL answer is incorrect.

1. The SQL Server SIN() function uses radians.

2. 1 radian = 57.2957 degrees (approx.)

3. SELECT SIN(1) returns 0.8414709848078965.

I used...

While mentioning the version in the question would have been helpful, the question category is listed as "Category : SQL Server 2005 - TSQL" -- that's why I knew it...