railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

যদি sec2x - 3secx + 2 = 0 হয়, তবে x এর মান নির্ণয় কর,যখন 0° < x < 90°।

1
60°
2
30°
3
45°
4
75°
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