Home
Class 11
PHYSICS
The angles which the vector vecA =3hati+...

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

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • VECTOR

    CHHAYA PUBLICATION|Exercise EXERCISE (Very Short Answer Type Questions)|25 Videos

  • VECTOR

    CHHAYA PUBLICATION|Exercise EXERCISE (Short Answer Type Questions-I)|11 Videos

  • VECTOR

    CHHAYA PUBLICATION|Exercise Higher Order Thinking Skill (Hots) Questions|28 Videos

  • THERMOMETRY

    CHHAYA PUBLICATION|Exercise EXAMINATION ARCHIEVE - WBJEE|1 Videos

  • VISCOSITY AND SURFACE TENSION

    CHHAYA PUBLICATION|Exercise EXERCISE (CBSE SCANNER)|9 Videos

Similar Questions

Explore conceptually related problems

Calculate the unit vector along vecA=3hati+4hatj-hatk .

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

Find the angle between the two vectors vecA = hati + 2hatj + 3hatk and vecB = 2hati+ hatj + 4hatk .

Find the angle between the vectors veca=hati-hatj+hatk and vecb=hati+hatj-hatk .

Calculate the angle between the vector ______ vecA = 3hati+4hatj +12hatk and z axis.

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)) .

Find the angle between the two vectors vecA =hati-2hatj+3hatk and vecB=2hati+hatj+3hatk .

Determine the value of n so that the vectors vecA=2hati+4hatj-nhatk and vecB=3hati-4hatj+2hatk are perpendicular .

Find the magnitude of the vector 3hati+4hatj+12hatk and the angles it makes with x,y,z axes.

Find the angle between the vectors vecA=2hati+3hatj and vecB=-3hati+2hatj .

CHHAYA PUBLICATION-VECTOR-EXERCISE (Multiple Choice Questions)
  1. The condition (a*b)^2 =a^2b^2 is satisfied when

    Text Solution

    |

  2. If vecP+vecQ=vecR and |vecP|=|vecQ|=sqrt(3) and |vecR|=3 , then the ...

    Text Solution

    |

  3. The angles which the vector vecA =3hati+6hatj+2hatk makes with the coo...

    Text Solution

    |

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

    Text Solution

    |

  5. If a1 and a2 are two non-collinear unit vectors and if |a1+a2|=sqrt(3)...

    Text Solution

    |

  6. Which of the following is a vector quantity ?

    Text Solution

    |

  7. The resultant of two forces of magnitude (x+y) and (x-y) is sqrt(x^2+y...

    Text Solution

    |

  8. The sum of magnitudes of two forces acting at a point is 16 N. The r...

    Text Solution

    |

  9. Two men have velocities of 4 m/s towards east and 3 m/s towards sout...

    Text Solution

    |

  10. Two forces in the ratio 1:2 act simultaneously on a particle. The resu...

    Text Solution

    |

  11. Given vecA=2hati+3hatj and vecB=hati+hatj . The component of vector ve...

    Text Solution

    |

  12. One of the components of a velocity vector of magnitude 50 m*s^(-1) i...

    Text Solution

    |

  13. The times of flight of two projectiles are t1 and t2. If R be the hor...

    Text Solution

    |

  14. For angles theta and (90^@-theta) of projection, a projectile has the ...

    Text Solution

    |

  15. An aeroplane is flying with a velocity of 216 km/h at an altitude of 1...

    Text Solution

    |

  16. The initial velocity and the acceleration of a particle are vecu=3hati...

    Text Solution

    |

  17. The equations of motion of a projectile are x=36 t and 2y=96t-9.8 t^2....

    Text Solution

    |

  18. Two projectiles, projected with angles (45^@- theta) and (45^@+theta)...

    Text Solution

    |

  19. For a projectile, ("horizontal range")^2 =48xx("maximum height")^2 ...

    Text Solution

    |

  20. Two railway tracks are paraller to west-east direction . Along one tra...

    Text Solution

    |