Kinematics Question 18

Question: If vectors P, Q and R have magnitude 5, 12 and 13 unit and P+Q=R, the angle between Q and R it’s [CEET 1998]

Options:

A) cos1512

B) cos1513

C) cos11213

D) cos1713

Show Answer

Answer:

Correct Answer: C

Solution:

|P| = 5 , |Q| =12 and |R| =13

cosθ=QR=1213 θ=cos1(1213)



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