Question

three vectors P,Q,R obey P+Q=R and P^2+Q^2=R^2 the angle between P&Q is​

Answer 1

The angle between the two vwctors P ans Q is 90 ∘

Explanation:

We are given that:

• P + Q = R

Solution:

Now we know that:

|R| = √ P^2 + Q^2 + 2PQcos   θ

 θ = Angle between P and Q

R^2 = P^2 + Q^2 + 2 PQ cos(θ)

P^2 + Q^2 = R^2

R^2 = R^2 + 2PQ cos(θ)

2PQ cos(θ) = 0

cos(θ) = 0

θ = 90 ∘

Thus the angle between the two vwctors P ans Q is 90 ∘

Answer 2

Answer:

Explanation: nothing