Algebra-2

Question Analysis
This problem assesses the understanding of the sine function's values at specific angles, particularly in the third quadrant.

Key Concept Explanation
The sine function, , has a period of . In the unit circle, the angle is in the third quadrant, where the sine function is negative.

Step-by-step Solution
1. Identify the reference angle for , which is .
2. Determine the sign of the sine function in the third quadrant, which is negative.
3. Use the known value of

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