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The angle subtended by the vector vecA=s...

The angle subtended by the vector `vecA=sqrt(3) hati-hatj` with the y-axis is

A

`60^@`

B

`240^@`

C

`120^@`

D

`45^@`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • Statement I: The angle between the vectors vecA=hati +hatj and vecB=hatj+hatk is (pi)/3 . Statement II: The angle between vector vecA and vecB is theta =cos ^(-1) ((vecA*vecB)/(AB)) .

    A
    Statement I is true , statement II is true, statement II is a correct explanation for statement I.
    B
    Statement I is true , statement II is true, statement II is not a correct explanation for statement I.
    C
    Statement I is true, statement II is false.
    D
    Statement I is false, statement II is true.

  • The angles which the vector vecA =3hati+6hatj+2hatk makes with the coordinate axes are

    A
    `cos^(-1) ""3/7 cos^(-1)""6/7 and cos ^(-1)""2/7`
    B
    `cos^(-1) ""4/7 cos^(-1)""5/7 and cos ^(-1)""3/7`
    C
    `cos^(-1) ""3/7 cos^(-1)""4/7 and cos ^(-1)""1/7`
    D
    None of the above

  • Angle between the vectors hati +hatj and hati-hatk is

    A
    `60^@`
    B
    `30^@`
    C
    `45^@`
    D
    `90^@`

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    If hati and hatj are unit vectors along x and y axes respectively then the angle made by ( hati+hatj) vector with the x-axis is …….. [Fill in the blanks]

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