**Q3: **

What is the value of ?

**Q4: **

What is the value of ?

**Q5: **

What is the value of ?

**Q6: **

What is the value of ?

**Q7: **

What is the value of ?

**Q8: **

What is the value of ?

**Q9: **

What is the value of ?

**Q10: **

What is the value of ?

**Q11: **

What is the value of ?

**Q12: **

What is the value of ?

**Q13: **

Find the value of .

**Q14: **

Given that and are the two roots of the equation , determine the value of .

**Q15: **

What is the value of ?

**Q16: **

What is the value of ?

**Q17: **

What is the value of ?

**Q18: **

What is the value of ?

**Q19: **

Calculate , giving your answer to the nearest thousandth.