Question

give me the formula for vector addition​

Answer 1

Explanation:

I think it's your answer

Two vectors of lengths a and b make an angle θ with each other when placed tail to tail. Show that the magnitude of their resultant is : r=√a2+b2+2abcos(θ).

Answer 2

Proof of vector addition formula. Two vectors of lengths a and b make an angle θ with each other when placed tail to tail. Show that the magnitude of their resultant is : r=√a2+b2+2abcos(θ)