Let z0 be a root of the quadratic equation, x2+x+1=0. If z=3+6
−3
, then arg Z is equal to
a.
b.
c.
0
d.
−3 , then arg Z is equal toa.
b.
c.
0
d.
Question ID - 56747 | SaraNextGen Top Answer Let z0 be a root of the quadratic equation, x2+x+1=0. If z=3+6 −3 , then arg Z is equal to
a.
b.
c.
0
d.
Let z0 be a root of the quadratic equation, x2+x+1=0. If z=3+6 −3 , then arg Z is equal to
|
a. |
|
b. |
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|
c. |
0 |
d. |
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1 Answer
127 votes
Answer Key / Explanation : (a) -
z0=
or 
Where 
is a non-real cube root of unity)
z = 3+6i(
)81−3i(
)93
z=3+3i
arg z=
127 votes
Answer Link
127