The direction cosines of x-axis are (A) ...

The direction cosines of x-axis are (A) 0,0,1 (B) 1,0,0 (C) 0,1,0 (D) 0,1,1

A

`1,0,0`

B

`0,1,0`

C

`0,0,1`

D

`1,1,1`

Verified by Experts

The correct Answer is:

A

THREE DIMENSIONAL GEOMETRY
TARGET PUBLICATION|Exercise Critical Thinking|40 Videos
THREE DIMENSIONAL GEOMETRY
TARGET PUBLICATION|Exercise Competitive Thinking|37 Videos
PROBABILITY DISTRIBUTION
TARGET PUBLICATION|Exercise Evaluation test|5 Videos
TRIGONOMETRIC FUNCTIONS
TARGET PUBLICATION|Exercise Evaluation Test|34 Videos

Similar Questions

Explore conceptually related problems

The direction cosines of any normal to the xy-plane are (A) 1,0,0 (B) 0,1,0 (C) 1,1,0 (D) 0,01

a^0 is equal to.... (A) 0 (B) 1 (C) -1 (D) a

If the direction cosines of a line are 1/c,1/c,1/c rthen (A) c.0 (B) 0ltclt1 (C) c=+-sqrt(3) (D) cgt2

The direction cosines of line joining (1,-1,1) and (-1,1,1) are (A) 2,-2,0 (B) 1,-1,0 (C) 1/sqrt(2)-1/sqrt(2),0 (D) none of these

If I=int_0^1 (xdx)/(8+x^3) then the smallest interval in which I lies is (A) (0,1/8) (B) (0,1/9) (C) (0,1/10) (D) (0,1/7)

The matrix of the transformation reflection in the line x+y=0 is (A) [(-1,0),(0,-1)] (B) [(1,0),(0,-1)] (C) [(0,1),(1,0)] (D) [(0,-1),(-1,0)]

If A=[(0,1),(1,0)] then A^4 is (A) [(0,0),(1,1)] (B) [(1,1),(0,0)] (C) [(0,1),(1,0)] (D) [(1,0),(0,1)]

Write the direction-cosines of the line joining the points (1,0,0) and (0,1,1).

The abscissa and ordinate of the origin are (a) (0, 0) (b) (1, 0) (c) (0, 1) (d) (1, 1)

If the direction cosines of a straighat line are k,k,k the (A) kgt0 (B) 0ltklt1 (C) k=1 (D) k=1/sqrt(3) or -1/sqrt(3)