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

cos A = 15/17 এবং cos B = 4/5 হলে, cot(A - B) এর মান কত?

1

87/99

2

88/97

3

85/13

4

(- 84)/13

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