if R vector = P vector + Q vector and R = P +Q find angle between P vector and Q vector
Answer (1)
2nd Jun, 2021
Hey,
In order to find the magnitude of a vector the formula is,
R^2= P^2 + Q^2 + 2 PQ cos¢
Now given, R= P+ Q
Squaring both sides, R^2= P^2 + Q^2 + 2PQ
Equating both the reaction,
R^2= P^2 + Q^2 + 2 PQ cos¢ = R^2= P^2 + Q^2 + 2PQ
Simplifying, cos¢ = 1
= Cos 0° = 1
Therefore the angle is 0 degree.
Hope that helps.
Thank you.
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