Mathematics · Trigonometry
If X + 1 X = 2 cos(θ), then X 3 + 1 X 3 = ?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1cos(2θ)
- 22 cos(3θ)✓
- 3cos(3θ)
- 42 cos(2θ)
Correct answer
2 cos(3θ)
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