Mathematics · Trigonometry
The expression (4 cos2 9° - 3)(4 cos2 27° - 3) when simplified reduces to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1cot 27°
- 2tan 27°
- 3cot 9°✓
- 4tan 9°
Correct answer
cot 9°
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