find the value of k if (2,k,-3) and (4,2,6) are perpendicular Thank you
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Doesn't the two coordinates you gave correspond to 2 points in space? If so, how can 2 points be perpidicular?
Originally Posted by ep78 find the value of k if (2,k,-3) and (4,2,6) are perpendicular two vectors are perpendicular if their dot product = 0 $\displaystyle \langle 2,k,-3 \rangle \bullet \langle 4,2,6 \rangle = 8 + 2k - 18 = 0$ solve for $\displaystyle k$
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