**Q4: **

Find the value of .

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- D

**Q5: **

Find the value of given .

**Q6: **

Find the value of given .

**Q7: **

Find the value of given where .

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- B
- C
- D

**Q8: **

Find the value of given where .

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- C
- D

**Q9: **

Find given and .

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- D

**Q10: **

Find given .

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- D

**Q11: **

Find the value of given .

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- D

**Q12: **

Find the value of given where .

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- C
- D

**Q13: **

Find the value of given where .

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- C
- D
- E

**Q14: **

Knowing that and , find .

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- E

**Q15: **

Find the value of given where .

- A
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- C
- D