Question

The magnitude of resultant of two vectors P
and Q is gien by R²=

p²+Q², what
is the angle between P and Q.​

Answer 1

We know the resultant R is given by

R= root over of P^2+Q^2+2PQcostheta

Hence if theta=90 degree,

Then costheta=0

Thus R^2=P^2+Q^2

And the angle is 90 degree

Hope that helps you ✌️

Answer 2

Answer:

90°

Explanation:

we know that

R²=P²+Q²+2PQCosA,where A is the angle between P and Q.

Given that

R²=P²+Q²

On comparison,

2PQCosA=0

CosA=0

A=90°