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Doctors Medicines MCQs Q&A

  1. $$\sqrt {{{\text{P}}^2} + {{\text{Q}}^2} + 2{\text{PQ}}\sin \theta } $$
  2. $$\sqrt {{{\text{P}}^2} + {{\text{Q}}^2} + 2{\text{PQ}}\cos \theta } $$
  3. $$\sqrt {{{\text{P}}^2} + {{\text{Q}}^2} - 2{\text{PQ}}\cos \theta } $$
  4. $$\sqrt {{{\text{P}}^2} + {{\text{Q}}^2} - 2{\text{PQ}}\tan \theta } $$
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Answer: Option 2

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