Mathematics · Trigonometry
यदि sec2 α + 4 cos2 α = 4 और 0° ≤ α ≤ 90° है, तो α का मान ज्ञात कीजिए।
- 145°
- 20°✓
- 360°
- 430°
सही उत्तर देखें
0°
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