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What is a unit vector ?...

What is a unit vector ?

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### Step-by-Step Solution: 1. **Definition of a Unit Vector**: A unit vector is defined as a vector that has a magnitude of exactly 1. This means that it represents only the direction of the vector without any consideration for its length. 2. **Examples of Unit Vectors**: - The unit vector in the direction of the x-axis is represented as **î** (i cap). Its magnitude is 1. - Similarly, the unit vector in the direction of the y-axis is represented as **ĵ** (j cap), and the unit vector in the direction of the z-axis is represented as **k̂** (k cap). Both of these also have a magnitude of 1. ...
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