1.

If a unit vector is represented by `0.5hati + 0.8hatj + chatk` the value of c isA. 1B. `sqrt(0.11)`C. `sqrt(0.01)`D. `sqrt(0.39)`

Answer» Correct Answer - 2
`1= sqrt((0.5)^(2) + (0.8)^(2) + c^(2))`
`c^(2)+ 0.64+ 0.25 = 1 rArr c^(2) + 0.89 = 1`
`rArr c= sqrt(0.11)`


Discussion

No Comment Found

Related InterviewSolutions