Teaching NVS TGT 2024 Test Series Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

যদি tan (5θ -10°) = cot (5φ + 20°) হয়, তাহলে θ + φ এর মান হল:

1

16°

2

18°

3

15°

4

20°

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