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

यदि (1 + tan A) (1 + tan B) = 2 है, तो A + B का मान ज्ञात कीजिए।

1
180°
2
90°
3
0°
4
45°
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