**Q3: **

If and , what is the modulus of ?

**Q4: **

What is the modulus of the complex number ?

**Q5: **

Given that , where and , write in algebraic form and hence find .

- A ,
- B ,
- C ,
- D ,

**Q6: **

Given that , determine .

**Q7: **

Given that , find .

- A
- B
- C
- D
- E

**Q8: **

What is the modulus of the complex number ?

**Q9: **

Find the modulus and the principle amplitude of the number .

- A , principle amplitude
- B , principle amplitude
- C , principle amplitude
- D , principle amplitude

**Q10: **

Find the modulus and the principle amplitude of the number .

- A , principle amplitude
- B , principle amplitude
- C , principle amplitude
- D , principle amplitude

**Q11: **

Given that , find .

- A
- B
- C
- D3
- E

**Q12: **

What is the modulus of the complex number ?

- A
- B3
- C1
- D
- E10

**Q13: **

What is the modulus of the complex number , where and are real?

- A
- B
- C
- D
- E

**Q14: **

Given the complex number , what is the modulus of ?

- A
- B
- C
- D
- E

**Q15: **

What is the modulus of the complex number ?

- A
- B3
- C7
- D
- E58

**Q16: **

Find the modulus and the principle amplitude of the number .

- A , principle amplitude
- B , principle amplitude
- C , principle amplitude
- D , principle amplitude

**Q17: **

Given that , determine .

- A
- B
- C
- D

**Q18: **

If , where is a complex number, what is ?

- A
- B0
- C2
- D1

**Q19: **

Find the modulus and principal amplitude of the complex number .

- A2,
- B ,
- C ,
- D2,

**Q20: **

Find the modulus and the principal amplitude of the number .

- A , principal amplitude
- B , principal amplitude
- C , principal amplitude
- D , principal amplitude

**Q21: **

Given that , where and , write in algebraic form and hence find .

- A ,
- B ,
- C ,
- D ,

**Q22: **

What is the magnitude of the product of and ?

- A
- B
- C
- D
- E

**Q23: **

Given that , find .