# The angle between two lines (Vector)

**The angle between two lines – Vector (Question)**

Determine the angle between the following vectors.

**a**= i + 3j + 5k**b**= 2i + 5j + 7k**c**= i – 3j + 2k

*Guide: *

Angle between two lines

cos x = **a**.**b**/(|**a**||**b**|)**a**.**b** is the scalar product of two vector

**The angle between two lines – Vector (Answer)**

- a & b = 5.6
- a & c = 84.8
- b & c = 88.3

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