Mathematics · Trigonometry
If x + 1x = 2 cos(θ), then what is x3 + 1x3 equal to?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 13 cos(3θ)
- 22 cos(3θ)✓
- 3cos(3θ)
- 4cos3(θ)
Correct answer
2 cos(3θ)
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