Mathematics · Trigonometry
Let S = {x ∈ (-π/2, π/2) : 91-tan2x + 9tan2x = 10} and β = ∑x ∈ S tan2(x/3), then 16(β - 14)2 is equal to:
- 116
- 264
- 38
- 432✓
Correct answer
32
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