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11111nata11111 [884]
3 years ago
12

Find the distance using the modulus of the difference between z1 = -8 + 3i and z2 = 7 - 4i.

Mathematics
1 answer:
geniusboy [140]3 years ago
3 0

Answer:

d = 16.55

Step-by-step explanation:

Given

z_1 = -8 + 3i

z_2 = 7 - 4i

Required

The distance between them

First, calculate the difference (d) between z1 and z2

d = z_1 - z_2

d = -8 + 3i - [7 - 4i]

Open bracket

d = -8 + 3i - 7 + 4i

Collect like terms

d = -8 - 7+ 3i  + 4i

d = -15+ 7i

Using modulus, we have:

d = \sqrt{R^2 + I^2}

Where

R = Real Part = -15

I = Imaginary Part = 7

So, we have:

d = \sqrt{(-15)^2 + 7^2}

d = \sqrt{225 + 49}

d = \sqrt{274}

d = 16.55

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