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If vector A+vector B= vecto A_vector …

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If vector A+vector B= vecto A_vector B ,find the angle between vector A and vector B

    • Posted by Barsa Rani 8 years, 1 month ago

    CBSE > Class 11 > Physics
    • 1 answers

    Viswajith Anand 8 years, 1 month ago

    A- vector A B- vector B A+B= vector P A-B= vector Q P^2 = [A^2 + B^2+ 2ABcosx]-(1) Q^2= [A^2+B^2-2ABcosx] - (2) Given P=Q Therefore, equating both (1)=(2) We get 4ABcosx= 0 Now cosx=0 Thus the angle between the vectors A, B is x=90

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