railway DFCCIL MTS 2025 Mock Test Series Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

cos2θ - sin2θ এর মান নির্ণয় করুন যদি (cotθ - tanθ)/(2 tanθ) = 3/4 হয়।

1
2/7
2
3/7
3
4/7
4
5/7
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