The magnitude of a vector is its size or length, while the direction of a vector is the angle at which it is pointing in relation to a reference point.
The magnitude of vector c can be calculated using the Pythagorean theorem, which states that the magnitude is equal to the square root of the sum of the squares of its components.
No, the magnitude of a vector is always a positive value. If the vector is pointing in the opposite direction, it is often represented as a negative value, but the magnitude itself will still be positive.
The unit of measurement for the magnitude of vector c will depend on the context and the specific vector being measured. For example, if vector c represents velocity, the magnitude may be measured in meters per second.
The direction of vector c is typically represented using degrees or radians in relation to a reference point or axis. It can also be represented using a compass direction, such as north or south.