railway RRB Group D Mock Test Series 2024-25 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

যদি m = sec θ - tan θ এবং n = cosec θ + cot θ হয়, তাহলে m + n(m - 1) এর মান কত?

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2
1
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0
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-1
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