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Recent questions tagged q11-a
Questions
The accompanying venn diagram shows three events A,B and C,and also the probabilities of the various intersections (for instance $P(A \cap B)=0.07$).Determine P(A)
cbse
math
class11
ch16
probability
exemplar
q11-a
sec-a
easy
asked
Jul 7, 2014
by
sreemathi.v
1
answer
$\overrightarrow{a}$ and $\overrightarrow{b}$ are unit vectors such that $2\overrightarrow{a}-4\overrightarrow{b}$ and $10\overrightarrow{a}+8\overrightarrow{b}$ are perpendicular to each other.Find the angle between the vectors $\overrightarrow{a}$ and $\overrightarrow{b}.$
isc
class12
modelpaper
2005
sec-b
q11
q11-a
asked
Apr 17, 2013
by
sreemathi.v
0
answers
The vectors $-2\hat{i}+4\hat{j}+4\hat{k}$ and $-4\hat{i}-2\hat{k}$ represent the diagonals BD and AC of a parallelogram ABCD.Find the area of the parallelogram.
isc
class12
modelpaper
2006
sec-b
q11
q11-a
asked
Apr 17, 2013
by
sreemathi.v
0
answers
If $\overrightarrow{a},\overrightarrow{b},\overrightarrow{c}$ are three vectors,show that : $(\overrightarrow{a}+\overrightarrow{b}).\{(\overrightarrow{b}+\overrightarrow{c})\times (\overrightarrow{c}+\overrightarrow{a})\}=2[\overrightarrow{a}\; \overrightarrow{b}\;\overrightarrow{c}]$
isc
class12
modelpaper
2007
sec-b
q11
q11-a
asked
Apr 16, 2013
by
sreemathi.v
0
answers
A small industrial concern used three raw materials A,B and C in its manufacturing process.The prices of the materials was as shown below :
isc
class12
modelpaper
2008
sec-b
q11
q11-a
asked
Apr 15, 2013
by
sreemathi.v
0
answers
Find the area of a parallelogram whose diagonals are determined by the vectors $\overrightarrow{a}=3i+j-2k$ and $\overrightarrow{b}=i-3j+4k$
isc
class12
modelpaper
2009
sec-b
q11
q11-a
asked
Apr 15, 2013
by
sreemathi.v
0
answers
Find the shortest distance between the lines whose vector equations are :$\overrightarrow{r}=(4\hat{i}-\hat{j}+2\hat{k})+\lambda(\hat{i}+2\hat{j}-3\hat{k})$ and $\overrightarrow{r}=(2\hat{i}+\hat{j}-\hat{k})+\mu(3\hat{i}+2\hat{j}-4\hat{k})$.
isc
class12
modelpaper
2010
sec-b
q11
q11-a
asked
Apr 12, 2013
by
sreemathi.v
0
answers
Find the vector equation of the line passing through the points $(-1,2,1)$ and parallel to the line $\overrightarrow{r}=2\hat{i}+3\hat{j}-\hat{k}+\lambda\big(\overrightarrow{i}-2\hat{j}+\hat{k}\big)$.Also,find the distance between these lines.
isc
class12
modelpaper
2011
sec-b
q11
q11-a
asked
Apr 11, 2013
by
sreemathi.v
0
answers
Find the shortest distance between the lines : $\large \frac{x-8}{3}=\frac{y+9}{-16}=\frac{z-10}{7}$ and $\large \frac{x-15}{3}=\frac{y-29}{8}=\frac{5-z}{-5}$
isc
class12
modelpaper
2012
sec-b
q11
q11-a
asked
Apr 10, 2013
by
sreemathi.v
0
answers
Show that the vectors $\overrightarrow{a},\overrightarrow{b},\overrightarrow{c}$ are coplanar if and only if $\overrightarrow{a}+\overrightarrow{b},\overrightarrow{b}+\overrightarrow{c},\overrightarrow{c}+\overrightarrow{a}$ are coplanar.
tnstate
class12
bookproblem
ch2
sec-1
exercise2-5
p87
q1
cnse
modelpaper-2014
sec-b
q11-a
asked
Apr 5, 2013
by
poojasapani_1
1
answer
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