other govt exam CSIR Junior Secretariat Assistant (JSA) 2025 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

\(\frac{3}{5}\)(sec2 20° - cot2 70°) இன் மதிப்பு என்ன?

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