The value of sin(17π/4) is -√2/2, the value of sin(18π/4) is 0, and the value of sin(17π/4) is -√2/2.
So, the expression becomes:
-√2/2 0 (-√2/2) = 0.
Therefore, the result is 0.
The value of sin(17π/4) is -√2/2, the value of sin(18π/4) is 0, and the value of sin(17π/4) is -√2/2.
So, the expression becomes:
-√2/2 0 (-√2/2) = 0.
Therefore, the result is 0.