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Liczby zespolone i trygonometria

Authored by Tomasz Turba

Mathematics

8th Grade

Used 1+ times

Liczby zespolone i trygonometria
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Przekształć liczbę zespoloną 3 + 4i do postaci trygonometrycznej.

3(cos(0) + i sin(0))

6(cos(0.52) + i sin(0.52))

5(cos(0.93) + i sin(0.93))

4(cos(1.57) + i sin(1.57))

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Oblicz iloczyn liczb zespolonych (2 + 3i) i (1 - 2i).

-4 - i

3 + i

-2 + 5i

1 - i

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Jakie są wartości sinusa i cosinusa dla kąta 45°?

sin(45°) = √2/2, cos(45°) = √2/2

sin(45°) = √3/2, cos(45°) = 1/2

sin(45°) = 0, cos(45°) = 1

sin(45°) = 1, cos(45°) = 0

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Przekształć liczbę zespoloną -1 + i do postaci trygonometrycznej.

√2(cos(5π/4) + i sin(5π/4))

√2(cos(7π/4) + i sin(7π/4))

√2(cos(3π/4) + i sin(3π/4))

√2(cos(π/4) + i sin(π/4))

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Oblicz moduł liczby zespolonej 5 - 12i.

13

15

10

5

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Zastosuj wzór trygonometryczny: sin²(θ) + cos²(θ) = ?

0

sin(θ)

cos(θ)

1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Mnożenie liczb zespolonych: (3 + 2i)(4 - i) = ?

12 + 7i

10 - 3i

8 + 4i

14 + 5i

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