Basic Technical Mathematics, 11th Edition

Exercises 12.4, page 356

1. 1. $5(\cos 126.9\hspace{0.17em}°\hspace{0.17em}\hspace{0.17em}+\hspace{0.17em}j\sin 126.9\hspace{0.17em}°\hspace{0.17em})$

   

2. 3. $10(\cos 36.9\hspace{0.17em}°\hspace{0.17em}\hspace{0.17em}+\hspace{0.17em}j\sin 36.9\hspace{0.17em}°\hspace{0.17em})$

   

3. 5. $50(\cos 306.9\hspace{0.17em}°\hspace{0.17em}\hspace{0.17em}+\hspace{0.17em}j\sin 306.9\hspace{0.17em}°\hspace{0.17em})$

   

4. 7. $3.61(\cos 123.7\hspace{0.17em}°\hspace{0.17em}\hspace{0.17em}+\hspace{0.17em}j\sin 123.7\hspace{0.17em}°\hspace{0.17em})$

   

5. 9. $0.60(\cos 204\hspace{0.17em}°\hspace{0.17em}\hspace{0.17em}+\hspace{0.17em}j\sin 204\hspace{0.17em}°\hspace{0.17em})$

   

6. 11. $2(\cos 60\hspace{0.17em}°\hspace{0.17em}\hspace{0.17em}+\hspace{0.17em}j\sin 60\hspace{0.17em}°\hspace{0.17em})$