Mathematics · Trigonometry
The value of the expression [(tan 25° cot 65° - cosec2 65°) + cot2 61° - sec2 29°] / [sin2 5° + sin2 7° + sin2 9° + ... + sin2 85°] is:
- 1-4/41✓
- 2-2/41
- 34/45
- 4-2/45
Correct answer
-4/41
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