Home
Class 11
PHYSICS
If the two directional cosines of a vect...

If the two directional cosines of a vectors are `1/sqrt(2)` and `1/sqrt(3)` then the value of third directional cosine is

A

`(1)/(sqrt(6))`

B

`(1)/(sqrt(5))`

C

`(1)/(sqrt(7))`

D

`(1)/(sqrt(10))`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

What are the direction cosines ?

The direction cosines of a vector hati+hatj+sqrt(2) hatk are:-

Write the direction cosines of y-axis.

Define direction cosines of a directed line.

Find the directional cosines of vector (5hati+2hatj+6hatk) . Also write the value of sum of squares of directional cosines of this vector.

If A equiv (2, 3, 4), B equiv (3, 4, 5). The direction cosine of a line are (1/sqrt(3), 1/sqrt(3), 1/sqrt(3)) Now integral value of the projection of AB on the given line is _______.

The direction cosines of a vector hat(i) + hat(j) + sqrt(2)hat(k) are :

Find the directional consines of vector (5hati+2hatj+6hatk) . Also write the value of sum of squares of directional cosines of this vector.

What are the direction cosines of Z-axis?

The direction cosines of hati + hatj + hatk are