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

x = r sin A cos C, y = r sin A sin C மற்றும் z = r cos A எனில், x2 + y2 + z2 இன் மதிப்பைக் காண்க

1
r2
2
2r2
3
2r
4
0
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