If a line has direction ratios 2, –1, –2...

If a line has direction ratios 2, –1, –2, then what are its direction cosines?

Text Solution

AI Generated Solution

Topper's Solved these Questions

EXAM REVISION SERIES
XII BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise All Questions|19 Videos

Similar Questions

Explore conceptually related problems

What are the direction cosines ?

If a line has direction ratios -18,-12,-4 then what are its direction cosines?

If a line has the direction ratios 18 , 12 , 4 , then what are its direction cosines?

If a line has direction ratios proportional to 2, -1, -2, then what are its direction cosines?

If a line has direction ratios 2,1,2 .determine its direction cosines.

if a line has direction ratio 2,-1,-2,determine its direction cosine

What are the direction cosines of Z-axis?

Direction ratios of the line are 2, 1, -3 . Find the direction cosines.

If a vector vecr has magnitude 14 and direction ratios 2, 3 and -6. Then, find the direction cosines and components of vecr , given that vecr makes an acute angle with X-axis.

If vecP = hati + hatj + hatk , its direction cosines are

XII BOARD PREVIOUS YEAR PAPER ENGLISH-BOARD PAPER SOLUTIONS-All Questions

Evaluate: int0^(pi/4)(sinx+cosx)/(9+16sin2x)dx
Text Solution
|
Find lambda where projection of vec (a) = lambda hat (i) + hat (j) ...
Text Solution
|
If a line has direction ratios 2, –1, –2, then what are its directi...
Text Solution
|
Write the vector equation of the line given by (x-5)/3=(y+4)/7=(z-6...
Text Solution
|
Prove that: tan^(-1)[(sqrt(1+x)-sqrt(1-x))/(sqrt(1+x)+sqrt(1-x))]=pi/4...
Text Solution
|
Using properties of determinants, solve the following for x: |[x-2, ...
Text Solution
|
If x=tan(1/alogy)\ , show that (1+x^2)(d^2\ y)/(dx^2)+(2x-a)(dy)/(dx)=...
Text Solution
|
Evaluate: int0^(pi/2)(x+sinx)/(1+cosx)dx
Text Solution
|
Solve the following differential equation: x\ dy-y\ dx=sqrt(x^2+y^2...
Text Solution
|
Solve the following differential equation: <math> <mrow> <mro...
Text Solution
|
A speaks truth in 60% of the cases, while B in 90% of the cases. In...
Text Solution
|
If vec a ,\ vec b ,\ are two vectors such that | vec a+ vec b|=| ve...
Text Solution
|
In answering a question on a multiple choice test, a student either...
Text Solution
|
An urn contains 4 white and 3 red balls. Let X be the number of red ba...
Text Solution
|
If y=(sin^(-1)\ x)/(sqrt(1-x^2)) , show that (1-x^2) (d^2\ y)/(dx^2)-...
Text Solution
|
Using properties of determinants, prove the following: |[1,1+p,1+p+q],...
Text Solution
|
On a multiple choice examination with three possible answers (out o...
Text Solution
|
If vec p is a unit vector and ( vec x-\ vec p).( vec x+\ vec p)...
Text Solution
|
Let f: NvecN be defined by f(n)={(n+1)/2,\ "if"\ n\ "i s\ o d d"n/2...
Text Solution
|
Solve the following differential equation: cos^2x(dy)/(dx)+\ y=tanx
Text Solution
|