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Derive anexpmusion for magnitudensultant vector istwo vechois8ame hipe are indined to eachsther at an ange ahing at acomnon poin |
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Answer» cosine rule→ R=magnitude of resultant of u and v , inclined at an angle α to vector u, R²=u²+v²-2uvcos(180°-θ) R=√{u²+v²+2uvcosθ} sinα=usinθ/R |
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