Practicing Success
Practicing Success
CUET Preparation Today
If \(0\cdot 4\hat{i}+0\cdot 7\hat{j}+c\hat{k}\) is a unit vector, then the value of \(c\) is |
\(\sqrt{0.35}\) \(\sqrt{1.44}\) \(\sqrt{0.12}\) \(\sqrt{0.67}\) |
\(\sqrt{0.35}\) |
| \(\begin{aligned}\sqrt{(0.4)6{2}+(0.7)^{2}+c^{2}}&=1\\ c&=\sqrt{0.35}\end{aligned}\) |
