Mathematics · Trigonometric Equations
The sum of all values of x in [0, 2π] for which sin x + sin 2x + sin 3x + sin 4x = 0 is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 19π✓
- 212π
- 311π
- 48π
Correct answer
9π
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