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

जर x = x = r sin A cos C, y = r sin A sin C आणि z = r cos A असेल तर x2 + y2 + z2 चे मूल्य शोधा. 

1
r2
2
2r2
3
2r
4
0
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