Which one of the following statements expresses a true proportion?
1 answer:
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Answer:
option-A
option-D
Step-by-step explanation:
We are given a complex number as
we know that whenever we have
where
a is the real number
b is imaginary number
now, we can verify each statement
option-A:
we can see that
a=7
and
a is the real number
so, 7 will be real number
so, this is TRUE
option-B:
we know that
so, imaginary number is
while it is mentioned square root 3 is the imaginary part of the number
so, this is FALSE
option-C:
We can see that coefficient of i is b
and
so, this is FALSE
option-D:
we know that
'a' and 'b' are sum of real and imaginary number
so, this is TRUE