two vectors vector is equal to 3 i+ 4 J - 9 K and vector b is equal to 9 i- 2 j+ 5 k are acting at a point what is magnitude of the resultant
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magnitude of the resuultant vector is 37
shivanisharma34:
how you solve it
can you send solution
it is a dot product first we have to keep seprate a and b after that multiply then you get your answer
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|(3i+4j-9k).(9i-2j+5k)|
= |3×9-4×2-9×5|
= |27-8-45|
= |27-53|
= |-26|
= 26
= |3×9-4×2-9×5|
= |27-8-45|
= |27-53|
= |-26|
= 26
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