railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

Find the value of cos(A + B), if tan A = 3/4 and tan B = 5/12 and A and B are in quadrant I.

1
1
2
33/65
3
16/65
4
15/48
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