3 years ago

List 5 numbers, so that

1 answer:

5 0

1, 3, 5, 7, 9. You could continue on with this pattern forever by adding two to each previous number and it would average out correctly.

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Find z1z2 if z1 = 2/5(cos63° + isin63°) and z2 = 10/3(cos117° + isin117°).

Airida [17]

Answer:

-10/3 is the answer

Step-by-step explanation:

Given are two complex numbers as

$z1=\frac{2}{5} (cos63 + isin63)\\z2=\frac{10}{3} (cos 117 + isin117})$

Recall Demoivre theorem as

(cosA+isinA)(cos A+isin B) = cos(A+B)+isin(A+B)

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A+B = 63+117 =180

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Which expression is equivalent to 8 (9 + x)?

jasenka [17]

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