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veca and vecb are two vectors such that ...

`veca` and `vecb` are two vectors such that `|veca+vecb|= |veca-vecb|` then angle between `veca` and `vecb` is

A

`30^@`

B

`60^@`

C

`90^@`

D

`120^@`

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Knowledge Check

  • Statement I: If two vectors veca and vecb are such that |veca+vecb|=|veca-vecb| , then the angle between veca and vecb is 90^@ . Statement II: veca+vecb=vecb+veca .

    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.

  • If vecA*vecB=|vecAxxvecB| then the angle between vecA and vecB is

    A
    `pi`
    B
    `(pi)/2`
    C
    0
    D
    `(pi)/4`

  • If veca+vecb=vecc , and a+b=c then the angle between veca and vecb is

    A
    `90^@`
    B
    `180^@`
    C
    `120^@`
    D
    zero

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