If vectors P, Q and R have magnitude 5, 12 and 13 units and P̅ + Q̅ = R̅, the angle between Q and R is - VgyanHub

Question:

21. If vectors P, Q and R have magnitude 5, 12 and 13 units and P̅ + Q̅ = R̅, the angle between Q and R is

Options :

a) cos⁻¹(5/12)
b) cos⁻¹(5/13)
c) cos⁻¹(12/13)
d) cos⁻¹(7/13)

Answer :

c) cos⁻¹(12/13)

Answer Steps :

Solution :-

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