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Find the angle between two vectors vec...

Find the angle between two vectors ` vec a`and ` vec b`with magnitudes `sqrt(3)`and 2 respectively having ` vec a. vec b=sqrt(6)`

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To find the angle between two vectors \( \vec{a} \) and \( \vec{b} \) with given magnitudes and dot product, we can follow these steps: ### Step 1: Write down the formula for the dot product The dot product of two vectors \( \vec{a} \) and \( \vec{b} \) can be expressed as: \[ \vec{a} \cdot \vec{b} = |\vec{a}| |\vec{b}| \cos \theta \] where \( |\vec{a}| \) and \( |\vec{b}| \) are the magnitudes of the vectors, and \( \theta \) is the angle between them. ...
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Three coplanar vectrors vec(A), vec(B) and vec(C) have magnitudes 4, 3 and 2 respectively. If the angle any two vector is 120^(@) then which of the following vector may be equal to (3vec(A))/4+vec(B)/3+vec(C)/2

Knowledge Check

  • The angle between two vectors vec(a) and vec(b) with magnitudes sqrt(3) and 4, respectively and vec(a). vec(b) = 2 sqrt(3) is: a) 2π/3 b) π/2 c) π/3 d) π/6

    A
    `(2pi )/( 3)`
    B
    `( pi )/(2)`
    C
    `( pi )/( 3)`
    D
    `( pi )/( 6)`
  • NCERT ENGLISH-VECTOR ALGEBRA-EXERCISE 10.3
    1. Find the angle between two vectors vec aand vec bwith magnitudes sq...

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    2. Find the projection of the vector hat i- hat jon the vector hat i+ ...

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    3. Find the angle between the vectors hat i-2 hat j+3kand 3 hat i-2 hat...

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    4. Show that each of the given three vectors is a unit vector: 1/7(2 hat...

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    5. Find the projection of the vector hat i+3 hat j+7 hat kon the vector...

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    6. Evaluate the product (3 vec a-5 vec b).(2 vec a+7 vec b)

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    7. Find | vec a|and | vec b|, if ( vec a+ vec b)dot(( vec a- vec b))=8a...

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    8. Find | -> x|, if for a unit vector -> a ,( -> x- -> a)dot( -> x+ ->...

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    9. Find the magnitude of two vectors vec aand vec b having the same ma...

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    10. If -> adot -> a=0and -> adot -> b=0, then what can be concluded ab...

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    11. If veca , vecb , veccare unit vectors such that veca+ vecb+ vecc= ve...

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    12. If veca=2 hat i+2 hat j+3 hat k , vecb=- hat i+2 hat j+ hat kand vec...

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    13. Show that | vec a| vec b+| vec b| vec a is a perpendicular to | vec a|...

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    14. Show that the points A(1, 2, 7), B(2, 6, 3) and C(3, 10 , -1) are col...

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    15. Show that the vectors 2 hat i- hat j+ hat k , hat i-3 hat j-5 hat k a...

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    16. If either veca= vec0or vecb= vec0, then veca * vecb = 0But the conv...

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    17. If the vertices A, B, C of a triangle ABC are (1, 2, 3), (1, 0, 0), (...

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    18. If vec a is a nonzero vector of magnitude a and lambda a nonzero sc...

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