Multiple choice general knowledge math & puzzles

The value of Sin 330deg is ____ (deg is degree)

  1. 0.6

  2. -0.5

  3. -1.5

  4. -1.0
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B Correct answer
Explanation

The value of sin 330° can be found using the unit circle. 330° is in the fourth quadrant, where sine is negative. The reference angle is 30° (since 360° - 330° = 30°). sin 30° = 1/2 = 0.5, so sin 330° = -0.5. The other options are incorrect - 0.6 is not a standard sine value, -1.5 is impossible (sine ranges from -1 to 1), and -1.0 would be sin 270°.

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