7400200085

Submitted by vladimir.arzt on Sun, 10/13/2024 - 21:11
Question: 
Choose each complex number for which the line joining the complex number z to the origin forms a 30∘ angle with the positive real axis (see the picture).
Project ID: 
7400200085
SubArea: 
Complex numbers in algebraic and polar form
Answer 1: 
3+i
Answer 1 Correct: 
1
Answer 2: 
1+3i
Answer 2 Correct: 
0
Answer 3: 
1+2i
Answer 3 Correct: 
0
Answer 4: 
2+i
Answer 4 Correct: 
0
Answer 5: 
23+2i
Answer 5 Correct: 
1
Answer 6: 
2+23i
Answer 6 Correct: 
0
Answer 7: 
3(cos⁡π6+i⋅sin⁡π6)
Answer 7 Correct: 
1
Answer 8: 

2(cos⁡π3+i⋅sin⁡π3)

Answer 8 Correct: 
0