Parkash

We need to use law of parallelogram of vector addition. For two vectors → P and → Q having an angle θ between the two the resultant vector → R is given by ∣ ∣ ∣ → R ∣ ∣ ∣ = √ ∣ ∣ ∣ → P ∣ ∣ ∣ 2 + ∣ ∣ ∣ → Q ∣ ∣ ∣ 2 + 2 ∣ ∣ ∣ → P ∣ ∣ ∣ ∣ ∣ ∣ → Q ∣ ∣ ∣ cos θ...

True