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| 1. |
A line is perpendicular to xy-plane Write the angle made by the line with z-axis. |
| Answer» SOLUTION :`SQRT((1+1)^2+(2-2)^2+(Z-)^2=3)rArr4+(z-1)^2=9rArr(z-1)^2=9rArrz-1=_-^+sqrt5rArrz=1_-^+sqrt5` | |