Home
Class 11
MATHS
If the angle between line with d.cs (-(2...

If the angle between line with d.cs `(-(2)/(sqrt(21)), (a)/(sqrt(21)), (b)/(sqrt(21)))` and other line with d.c `((3)/(sqrt(54)), (3)/(sqrt(54)), (-6)/(sqrt(54)))` is `90^(0)` then a pair of possible values of 'a' and 'b' respectively are

A

`-1, 4 `

B

4, 2

C

4, 1

D

`-4, -2`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

If the angle between the lines whose direcrtion cosines are (-(2)/(sqrt(21)),(C)/(sqrt(21)),(1)/(sqrt(21)))and((3)/(sqrt(54)),(3)/(sqrt(54)),(-6)/(sqrt(54))) is (pi)/(2) , then the value of C is

If the angle betweenthe lines whose direction cosines are (-(2)/(sqrt(21)), (C )/(sqrt(21)), (1)/(sqrt(21))) and ((3)/(sqrt(54)), (3)/(sqrt(54)), -(6)/(sqrt(54))) is (pi)/(2) , then the value of C is

Find the conine of the angle between the lines whose direction cosines are ((1)/(sqrt(3)),(1)/(sqrt(3)),(1)/(sqrt(3)))and((1)/(sqrt(2)),(1)/(sqrt(2)),0) .

Find the angle between the lines y = -sqrt(3)x + 5, y = 1/(sqrt3) x - 2/(sqrt3)

Find the angle between the lines whose direction ratios are (1,1,2)(sqrt(3), -sqrt(3),0)