railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

यदि 2 tanx + 3 cotx = 5 है, तो 4 tan2x + 9 cot2x का मान है:

1
11
2
15
3
17
4
13
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