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

sin (50° + A) - cos (40° - A) এর মান নির্ণয় করুন।

1

2

2

0

3

-1

4

1

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