Mathematics · Trigonometry
If y = cos2 x + sec2 x, where 0 ≤ x < π/2, then which one of the following options is correct?
- 10 < y < 0.5
- 20.5 ≤ y < 1
- 31 ≤ y < 2
- 4y ≥ 2✓
Correct answer
y ≥ 2
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