Question

The unit vector in the direction of the line is defined as _______.
a. tangent vector-length of the line
b. tangent vector/length of the line
c. length of the line/tangent vector
d. tangent vector+length of the line​

Answer 1

The correct option is b) tangent vector/length of the line

Step-by-step explanation:

• A unit vector always specifies the direction of a vector.
• The unit vectors are defined along an axis.
• Unit vector is inversely proportional to the length of the line.
• Hence, the unit vector in the direction of the line is defined as the tangent vector divided by length of the line.