Advertisements
Advertisements
Question
`(hat"i" + hat"j" - hat"k")*(hat"i" - hat"j" + hat"k")` = ______.
Options
`hat"i" - hat"j" - hat"k"`
1
−1
`−hat"j" + hat"k"`
MCQ
Fill in the Blanks
Advertisements
Solution
`(hat"i" + hat"j" - hat"k")*(hat"i" - hat"j" + hat"k")` = −1.
Explanation:
`(hat"i" + hat"j" - hat"k")*(hat"i" - hat"j" + hat"k")`
= 1 + 1 (−1) + (−1) (1)
= 1 − 1 − 1
= −1
shaalaa.com
Is there an error in this question or solution?
