What is $| | < 1, 9, 7 > - < 4, - 2, - 9 > | |$ $|| <1, 9, 7 > - < 4, -2, -9 >||$ ?

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What is $| | < 1, 9, 7 > - < 4, - 2, - 9 > | |$ $|| <1, 9, 7 > - < 4, -2, -9 >||$ ?

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Answer 1 · 2016-02-15T09:51:17

$| A | = \sqrt{386}$ $|A|=sqrt 386$

Explanation:

$step 1:$ $"step 1:"$
$find : < 1, 9, 7 > - < 4, - 2, - 9 >$ $"find : "<1,9,7> - <4,-2,-9>$
$< 1 - 4, 9 + 2, 7 + 9 >$ $<1-4,9+2,7+9>$
$< - 3, 11, 16 >$ $<-3,11,16>$
$step 2:$ $"step 2:"$
$find magnitude of vector :$ $"find magnitude of vector : "$
$| A | = \sqrt{{(- 3)}^{2} + 11^{2} + 16^{2}}$ $|A|=sqrt ((-3)^2+11^2+16^2)$
$| A | = \sqrt{9 + 121 + 256}$ $|A|=sqrt (9+121+256)$
$| A | = \sqrt{386}$ $|A|=sqrt 386$

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What is $| | < 1, 9, 7 > - < 4, - 2, - 9 > | |$ $|| <1, 9, 7 > - < 4, -2, -9 >||$ ?

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What is ||<1,9,7>−<4,−2,−9>|||| <1, 9, 7 > - < 4, -2, -9 >||?

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