0:00 - Trigonometry
0:22 - Trigonometric Ratio
1:51 - Pythagoras Theorem
3:59 - Important Pythagoras Formulae
7:38 - Problems
9:26 - If tan A = 1 and tan B = √3, then cos A . cos B - sin A sin B is equal to ?
11:09 - If sin B = 1/2, then 3cos B - 4 cos³B is equal to ?
12:29 - If sin A = 1/3, then cos A. cosec A + tan A . sec A is equal to ?

RRB NTPC Asked Questions :


28.12.2020 Shift 1 Questions: https://youtu.be/eUC7bqzqwBM
28.12.2020 Shift 2 Questions: https://youtu.be/F-R-srhpauk
29.12.2020 Shift 1 Questions: https://youtu.be/5nPQG1a9q-w
29.12.2020 Shift 2 Questions: https://youtu.be/DC4pEzgLUF8
30.12.2020 Shift 1 Questions: https://youtu.be/wsbtCa99sUw

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