railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Trigonometry

सरलीकृत करा: sin (A + B) sin (A – B)

1
पाप 2 अ - पाप 2 ब
2
cos 2 A – cos 2 B
3
sin 2 A + sin 2 B
4
cos 2 A
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