Mathematics · Trigonometry
The expression (tan6 θ - sec6 θ + 3sec2 θ tan2 θ) / (tan2 θ + cot2 θ + 2), where 0° < θ < 90°, is equal to:
- 1–cos2 θ sin2 θ✓
- 2cos2 θ sin2 θ
- 3–sec2 θ cosec2 θ
- 4sec2 θ cosec2 θ
Correct answer
–cos2 θ sin2 θ
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