Home
Class 12
MATHS
If theta is the angle between two vector...

If `theta` is the angle between two vectors `veca and vecb` , then `vecavecb ge0` only when

A

`0 lt theta lt pi/2`

B

`0 lt thetalepi/2`

C

`0 lt thetaltpi`

D

`0 lethetalepi`

Text Solution

Verified by Experts

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • SELF ASSESSMENT PAPER 04

    ICSE|Exercise SECTION .C.|12 Videos

  • SELF ASSESSMENT PAPER 04

    ICSE|Exercise SECTION .C.|12 Videos

  • SELF ASSESSMENT PAPER 03

    ICSE|Exercise Section -C|10 Videos

  • SELF ASSESSMENT PAPER 05

    ICSE|Exercise SECTION .C.|12 Videos

Similar Questions

Explore conceptually related problems

If theta is the angle between two vectors veca and vecb , then veca* vecb ge 0 only when (A)0 lt theta lt pi/2 (B) 0lt=theta lt=pi/2 (C)0 lt theta lt pi (D)0 lt=theta lt=pi

If theta is the angle between any two vectors veca and vec b , then | veca . vecb |=| veca xx vecb| when theta is equal to(A) 0 (B) pi/4 (C) pi/2 (D) pi

Knowledge Check

  • If theta is the angle between two vectors vec(a) and vec(b) , then vec(a).vec(b) ge 0 only when

    A
    `0 lt theta lt ( pi )/(2)`
    B
    `0 le theta le ( pi)/(2)`
    C
    `0 lt theta lt pi`
    D
    `0 le theta le pi `

  • If theta is the angle between two vectors vec(a) and vec(b) , then vec(a).vec(b) ge 0 only when

    A
    `0 lt theta lt (pi)/(2)`
    B
    `0 le theta le (pi)/(2)`
    C
    `0 lt theta lt pi`
    D
    `0 le theta le pi`

  • If theta is the angle between any two vectors veca and vecb , then |veca.vecb|=|veca xx vecb| when theta is equal to

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

    • Similar Questions

    Explore conceptually related problems

    If theta is the angle between any two vectors veca and vecb , then | vecadot vecb|=| vecaxx vecb| when theta is equal to (a) 0 (B) pi/4 (C) pi/2 (d) pi

    If the angle between two vectors vecA and vecB " is " 90^(@) then

    If theta is the angle between the unit vectors veca and vecb , then prove that i. cos((theta)/2)=1/2|veca+vecb| ii. sin (theta/2)=1/2|veca-vecb|

    If theta is the angle between unit vectors veca and vecb then sin(theta/2) is (A) 1/2|veca-vecb| (B) 1/2|veca+vecb| (C) 1/2|vecaxxvecb| (D) 1/sqrt(2)sqrt(1-veca.vecb)

    The angle between the two vectors veca + vecb and veca-vecb is

    Home
    Profile