If vectors P, Q and R have magnitude $$5$$,$$12$$ and $$13$$ units and P→$$+Q$$→$$=R$$→, the angle between Q and R is

Correct option is 3cos−1⁡1213

Questions

If vectors P, Q and R have magnitude 5,12 and 13 units and $\vec{P} + \vec{Q} = \vec{R}$ , the angle between Q and R is

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cos−1⁡512

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detailed solution

Correct option is C

|P→|=5,|Q→|=12 and |R→|=13cos⁡θ=QR=1213∴ θ=cos−1⁡1213

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If vectors P, Q and R have magnitude 5,12 and 13 units and P→+Q→=R→, the angle between Q and R is

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

If vectors P, Q and R have magnitude 5,12 and 13 units and $\vec{P} + \vec{Q} = \vec{R}$ , the angle between Q and R is