Email

Chat with tutors

Login

Ask Questions, Get Answers

Menu X

home ask tuition questions practice papers mobile tutors pricing

X

Questions >> CBSE XII

CBSE XII

Prove that $(\overrightarrow{a} + \overrightarrow{b} ) ⋅ (\overrightarrow{a} + \overrightarrow{b} ) =| \overrightarrow{a} |2 + | \overrightarrow{b} |2$ if and only if $\overrightarrow{a} , \overrightarrow{b}$ are perpendicular, given $\overrightarrow{a} ≠ 0, \overrightarrow{b} ≠ 0$

asked Nov 2, 2012 by balaji.thirumalai

0 answers

If $\overrightarrow{a} ,\overrightarrow{b} , \overrightarrow{c}$ are mutually perpendicular vectors of equal magnitudes, show that the vector $\overrightarrow{a} + \overrightarrow{b} + \overrightarrow{c}$ is equally inclined to $\overrightarrow{a}, \overrightarrow{b} and \overrightarrow{c}$ .

asked Nov 2, 2012 by balaji.thirumalai

0 answers

Given $\overrightarrow{a}, \overrightarrow{b} and \overrightarrow{c}$ Find a vector $\overrightarrow{d}$ which is perpendicular to both $\overrightarrow{a} and \overrightarrow{b}, and \overrightarrow{c} ⋅\overrightarrow{d} = 15$

asked Nov 2, 2012 by anonymous

0 answers

Show that the direction cosines of a vector equally inclined to the axes OX, OY and OZ are $1 / \sqrt{3}, 1 / \sqrt{3}$ and $1 / \sqrt{3}$

asked Nov 2, 2012 by balaji.thirumalai

0 answers

The two adjacent sides of a parallelogram are given. Find the unit vector parallel to its diagonal. Also, find its area.

asked Nov 2, 2012 by balaji.thirumalai

0 answers

Find the position vector of a point tand show that P is the mod point of the line segment

asked Nov 2, 2012 by balaji.thirumalai

0 answers

Show that the points A (1, – 2, – 8), B (5, 0, – 2) and C (11, 3, 7) are collinear, and find the ratio in which B divides AC.

asked Nov 2, 2012 by balaji.thirumalai

0 answers

Find a unit vector parallel to the vector....

asked Nov 2, 2012 by balaji.thirumalai

0 answers

Find a vector of magnitude 5 units, and parallel to the resultant of the vectors

asked Nov 2, 2012 by balaji.thirumalai

0 answers

Find the value of x for which $x(\hat{i} + \hat{j}+ \hat{k})$ is a unit vector

asked Nov 2, 2012 by balaji.thirumalai

0 answers

If $\overrightarrow {a} = \overrightarrow {b} + \overrightarrow {c}$ If this is the case, then is it true that $|\overrightarrow {a}| = |\overrightarrow {b}| + |\overrightarrow {c}|$

asked Nov 2, 2012 by balaji.thirumalai

0 answers

Determine the girl’s displacement from her initial point of departure.

asked Nov 2, 2012 by balaji.thirumalai

0 answers

Find the scalar components and magnitude of the vector joining the points $P (x_1, y_1, z_1)$ and $Q (x_2, y_2, z_2)$ .

asked Nov 2, 2012 by balaji.thirumalai

1 answer

Write down a unit vector in XY-plane, making an angle of 30° with the positive direction of x-axis.

asked Nov 2, 2012 by balaji.thirumalai

1 answer

Page:

« prev
1
...
212
213
214
215

Feedback Terms Facebook Twitter About Us

Your payment for is successful.

...