Mathematics · Trigonometry

The expression sin 7x + 6 sin 5x + 17 sin 3x + 12 sin xsin 6x + 5 sin 4x + 12 sin 2x equals:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

12 cos x✓
2cos x
32 sin x
4sin x

Correct answer

2 cos x

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The expression sin 7x + 6 sin 5x + 17 sin 3x + 12 sin xsin 6x + 5 sin 4x + 12 sin 2x equals:

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The expression sin 7x + 6 sin 5x + 17 sin 3x + 12 sin xsin 6x + 5 sin 4x + 12 sin 2x equals:

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