Question

Write formula for magnitude and direction of resultant of 2 vectors A and B, having an angle theta between them

Answer 1

Magnitude of two vectors with an angle ∆(consider this as theta) is

√(A^2 + B^2 + 2ABcos∆)

Direction of the resultant vector is

(Bsin∆)/(A + Bcos∆)

Hope it helps ;-)