Resultant of Two Vectors
### Formula:
$$R = \sqrt{A^2+B^2+2AB\cos\theta}$$
### Terminologies:
- R → Resultant vector; single vector that represents the combined effect of two or more vectors.
- A → Magnitude of first vector.
- B → Magnitude of second vector.
- θ → Angle between the two vectors.
- cosθ → Trigonometric ratio representing the angular relationship between vectors.
### Usage:
- Used to find the magnitude of resultant when two vectors act at an angle.