state gov Karnataka Police Constable Mock Test 2025 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

যদি sin4θ + cos4θ = 2 sin2θ cos2θ হয়, 0° < θ < 90°, তাহলে cot θ এর মান নির্ণয় করো।

1
1/√2
2
1/3
3
1
4
1/2
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