For v=5i2j, find unit vector u in the direction of v, and write your answer as a linear combination of the standard unit vectors i and j.
a. u=5/7i2/7j
b. u=5/29i2/29j
c. u=5(sqrt(29))/29i2(sqrt(29))/29j
d. u=5(sqrt(7))/7i2(sqrt(7))/7j
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1 answer

find the length of 5i  2j
= √(25+4) = √29
divide each component by √29
You might have to rationalize the denominator,
I don't see any radicals in a. and b. , so rule those out 👍
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answered by Reiny
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