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Gekata [30.6K]
3 years ago
11

Please the question below 55

Mathematics
1 answer:
Nataliya [291]3 years ago
4 0

Answer:

The value of x is 17.32

Step-by-step explanation:

It can clearly be seen that the triangle is a right-angled triangle.

In the triangle, according to reference angle 13 degree,

Base = 30

Perpendicular = x

We can use trigonometric ratios for finding the value of x

As tangent includes both perpendicular and base, we can use this.

So,

tan\ 30 = \frac{perpendicular}{base}\\tan\ 30 = \frac{x}{30}\\0.5773 = \frac{x}{30}\\x = 0.5773*30\\x = 17.319

Rounding off to nearest hundredth

x = 17.32

Hence,

The value of x is 17.32

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Simplify the following expression below:
IrinaK [193]
So, 4/3 - 2i

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apply complex arithmetic rule: (a + bi) (a - bi) = a^2 + b^2
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Simplify:
4(3) + 4(2i)
12    +    8i


4(3) + 4(2i)
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Multiply the numbers: 4(2) = 8
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Group the real par, and the imaginary part of the complex numbers:


Your answer is: 12/13 + 8i/13





Hope that helps!!!
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