MCQ
The vector $\cos\alpha\cos\beta\hat{\text{i}}+\cos\alpha\sin\beta\hat{\text{j}}+\sin\alpha\hat{\text{k}}$ is a,
- ANull vector.
- ✓Unit vector.
- CConstant vector.
- DNone of these.
✓
Answer
Correct option: B.
Unit vector.
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