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

यदि cot(2θ + 25°) = tan(θ + 20°) है, तब cot3θ + sec3θ ज्ञात कीजिए।

1

1

2

√2

3

1 + √2

4

2

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