Home
Class 12
MATHS
The magnitude of the projection of hati+...

The magnitude of the projection of `hati+3hatj+7hatk` on `7hati-hatj+8hatk` is ……………..

A

`(60)/(sqrt(114))`

B

`(60)/(sqrt(104))`

C

`(60)/(sqrt(141))`

D

`(60)/(sqrt(144))`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • VECTOR ALGEBRA

    KUMAR PRAKASHAN|Exercise Practice Paper - 10 (Section-B)|4 Videos

  • VECTOR ALGEBRA

    KUMAR PRAKASHAN|Exercise Practice Paper - 10 (Section-C)|4 Videos

  • VECTOR ALGEBRA

    KUMAR PRAKASHAN|Exercise Solutions of NCERT Exemplar Problems (Multiple Choice Questions (MCQs) )|171 Videos

  • THREE DIMENSIONAL GEOMETRY

    KUMAR PRAKASHAN|Exercise PRACTICE PAPER -11|16 Videos

Similar Questions

Explore conceptually related problems

Find the projection of the vector hati+3hatj+7hatk on the vector 7hati-hatj+8hatk .

Find the projection of the vector hati-hatj on the vector 7hati+hatj .

Find the projection of the vector 7hati+hatj-4hatk on the vector 2hati+6hatj+3hatk .

The unit vector parallel to the resultant of the vectors vecA=4hati+3hatj+5hatk and vecB=-hati+3hatj-8hatk is :

Find the angle between the vector 2hati-3hatj+hatk and hati+hatj-2hatk .

Find the magnitude of the vector vec(a)=(3hati+4hatj)xx(hati+hatj-hatk) .

Show that the vectors 2hati-3hatj+4hatk and -4hati+6hatj-8hatk are collinear.

Find the equation of the plane through the line of intersection of vecr.(2hati-3hatj+4hatk)=1 and vecr.(hati-hatj)+4=0 and perpendicular to vecr.(2hati-hatj+hatk)+8=0

Show that the points with position vectors 5hati+6hatj+7hatk,7hati-8hatj+9hatk and 3hati+20hatj+5hatk are collinear.