Q. 84.4( 39 Votes )

Answer :

So, and

Now we want to find the

Now, we have to find the unit direction in the direction of .We know that unit vector means that the magnitude of the vector is 1(unit).

It is defined as

So, we find the magnitude of first.

Rate this question :

How useful is this solution?

We strive to provide quality solutions. Please rate us to serve you better.

RELATED QUESTIONS :

Prove by vector method that the internal bisectors of the angles of a triangle are concurrent.

RD Sharma - Volume 2Prove that: If the diagonals of a quadrilateral bisect each other at right angles, then it is a rhombus.

RD Sharma - Volume 2Find the value of for which the four points with position vectors and are coplanar.

RD Sharma - Volume 2Prove that the diagonals of a rectangle are perpendicular if and only if the rectangle is a square.

RD Sharma - Volume 2Prove using vectors: The quadrilateral obtained by joining mid-points of adjacent sides of a rectangle is a rhombus.

RD Sharma - Volume 2Prove by vector method that the sum of the squares of the diagonals of a parallelogram is equal to the sum of the squares of its sides.

RD Sharma - Volume 2If the median to the base of a triangle is perpendicular to the base, then the triangle is isosceles.

RD Sharma - Volume 2(Pythagoras’s Theorem) Prove by vector method that in a right angled triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

RD Sharma - Volume 2Prove that : -

RD Sharma - Volume 2

Show that the four points having position vectors are not coplanar.

RD Sharma - Volume 2