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

જો A + B = 75° અને A - B = 15° હોય, તો 2(1 + cos 2B)(1 + tan A) ની કિંમત શોધો:

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