If you know that
, then you know right away

###
Otherwise, you can derive the same result. Let
, so that
.
is bounded, so we know
. For these values of
, we always have
.
So, recalling the Pythagorean theorem, we find

Then

as expected.
Answer:
Three hundred and fifty-four thousand, two hundred and ten =354210
Hundred thousand║Ten thousand║Thousand║Hundred║Tens║Ones
3 5 4 2 1 0
Step-by-step explanation:
Question (18):
Answer: (A) All of the following
(I am using
in place of conj(z)

Question (19):
Answer: (B) -7
modulus of -7 is sqrt(49)=7
the other choices are all < 7
Answer:
cos 60° = 1/2 because the angles are complements.
Step-by-step explanation: