Home
Class 12
MATHS
If the direction ratios of a straight li...

If the direction ratios of a straight line are proportional to 0,1,-1, then its inclination with z-axis is

A

`(pi)/(2)`

B

`pi`

C

`(3pi)/(2)`

D

`(3pi)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
D
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • QUESTION PAPER 2017

    CHHAYA PUBLICATION|Exercise UNIT -5|2 Videos

  • QUESTION PAPER 2017

    CHHAYA PUBLICATION|Exercise UNIT -6|1 Videos

  • QUESTION PAPER 2017

    CHHAYA PUBLICATION|Exercise UNIT -3|21 Videos

  • QUESTION PAPER -2018

    CHHAYA PUBLICATION|Exercise WBJEE|45 Videos

  • QUESTIONS PAPER -2019

    CHHAYA PUBLICATION|Exercise WBJEE 2019|45 Videos

Similar Questions

Explore conceptually related problems

If the direction ratios of a striaght line are proportional, to 0,1,-1 then its inclination with z-axis is

Define : Direction ratios of a straight line.

Knowledge Check

  • If a line whose direction ratios are proportional to 0, 1, -1 then the inclination of the line with z-axis is-

    A
    `pi/2`
    B
    `pi`
    C
    `(3pi)/2`
    D
    `(3pi)/4`

  • The direction ratios of the line 3x-2=2y+1=2z-4 are proportional to -

    A
    `(1)/(3),-(1)/(2),(1)/(2)`
    B
    `-(1)/(3),(1)/(2),(1)/(2)`
    C
    `1/3,1/2,1/2`
    D
    `1/3,1/2-(1)/(2)`

  • The direction cosines of z-axis are-

    A
    `0, 0, 1`
    B
    `0, 1, 0`
    C
    `1, 1, 1`
    D
    `1, 0, 0`

    • Similar Questions

    Explore conceptually related problems

    Define : Direction angles of a straight line,

    Define : Direction cosines of a straight line,

    Let l_(1), m_(1), n_(1) and l_(2), m_(2), n_(2) be the direction ratios of two given straight lines. Find the direction ratios of a straight line which is perpendicular to both the given straight lines.

    Find the direction ratios of a straight line which makes equal angles with the coordinate axes. How many such straight line are there?

    Can the numbers 1, 2, 3 be the direction ratios of a straight line?

    Home
    Profile