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

2(sin6θ + cos6θ) - 3(sin4θ + cos4θ) बराबर है:

1
0
2
-1
3
2
4
1
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