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Ne4ueva [31]
3 years ago
6

The result of adding a complex number to its conjugate is “an integer/a pure imaginary number/a real number/a whole number” and

the result of subtracting a complex number from its conjugate is “an integer/a real number/a pure imaginary number/a whole number”
Mathematics
1 answer:
sineoko [7]3 years ago
6 0

Answer:

If Z is a complex number:

Z = a + b*i

where a and b are real numbers, and i is an imaginary number.

Then "a" is the real part.

"b*i" is the imaginary part.

The conjugate of Z is:

Zc = a - b*i

So the sign of the imaginary part changes.

Then:

Sum:

Z + Zc = (a + bi) + (a - bi) = 2*a + 0 = 2*a

and remember that a is a real number, then 2*a is also a real numer.

The correct answer is "A real number".

Difference:

Z - Zc = (a + bi) - (a - bi) = 2b*i

and this is a pure imaginary number, so here the correct answer is: "a pure imaginary number"

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Which of the following must be true?
meriva

Answer:

BC < ED ⇒ answer A

Step-by-step explanation:

* Lets revise some facts in the triangle

- If one side of a triangle is longer than another side, then the angle

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- If one angle in a triangle is larger than another angle in a triangle,

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* Lets solve the problem

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∵ CD = 8 and BE = 8

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∵ BC is the opposite side to the angle of measure 24°

∵ ED is the opposite side to the angle of measure 30°

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∴ The side opposite to the angle of measure 24° < the side opposite

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7 0
2 years ago
I) Construct a triangle PQR such that |PQ|=8cm,{RPQ=90°{PQR=30°.Measure |RQ|​
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Answer:

6.93 cm

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