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Grace [21]
3 years ago
5

Question is in the picture, I dont get it.

Mathematics
1 answer:
lisov135 [29]3 years ago
8 0

Answer:

a = 0, b = 1/2

Step-by-step explanation:

Multiplication and division of complex numbers in polar form is pretty simple.

... a·Cis(α) × b·Cis(β) = ab·Cis(α+β) . . . . . multiply magnitudes; add angles

... a·Cis(α) / (b·Cis(β)) = (a/b)·Cis(α-β) . . . divide magnitudes, subtract angles

In your case, you have ...

... 2·Cis(120°) / (4·Cis(30°)) = (2/4)·Cis(120° -30°) = (1/2)·Cis(90°)

Of course, Cis(90°) = cos(90°) +i·sin(90°) = 0 +i.

... (1/2)·Cis(90°) = 1/2·(0 +i) = 0 + 0.5i

_____

<em>Comment on the use of a calculator</em>

It helps to be aware of how your calculator handles complex numbers. This one can express complex numbers in exponential format, equivalent to a polar form, but requiring specific notation. In this case, the variable D has been assigned the value π/180 so multiplying by it converts degrees to radians. The result of the division is (1/2)i, not 1/(2i).

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Find an equivalent mixed number for the decimal number.<br><br> 16.3
timofeeve [1]

Answer:

16 3/10

Step-by-step explanation:

Think about what fraction become .3 when put into a calculator

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6 0
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Read 2 more answers
PLEASE HELP ME I WILL GIFT YOU ALL THE AMONG US SHOP
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2 years ago
Question 9 of 10
Aleks04 [339]

Answer:

A is the answer

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2 years ago
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Step-by-step explanation:

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