Saved Bookmarks
| 1. |
If magnitude of sum of two unit vectors is `sqrt2` then find the magnitude of subtraction of these unit vectors. |
|
Answer» Correct Answer - `sqrt2` `because |hat A + hatB|= sqrt2 rArr 2xx1 xx cos""(theta )/(2) = sqrt2` `rArr cos ""(theta)/(2) = (1)/(sqrt2) rArr (theta )/( 2) = 45^(@) rArr theta = 90^(@)` `" "|hatA- hatB|= 2xx1 xx sin""(theta)/(2) = 2 xx sin 45^(@) = sqrt2` |
|