Exercise 3.4
Find the principal and general solutions of the following equations:
1. 
Ans. Given: Here 
lies in first or third quadrant.
or 
or 
or 
Therefore, the principal solutions are 
Now,
where 
Z
2. 
Ans. Given: 
Here lies in first or fourth quadrant.
or 
or 
or 
Therefore, the principal solutions are 
Now,
where Z
3. 
Ans. Given: 
Here lies in second or fourth quadrant.
or 
or 
or 
Therefore, the principal solutions are 
Now, 
where Z
4. 
Ans. Given: 
Here lies in third or fourth quadrant.
or 
or 
or 
Therefore, the principal solutions are 
Now, 
where Z
5. 
Ans. Given:
Z
or 
Z
or 
Z
or 
Z
Therefore, the principal solutions are 
Z
6. 
Ans. Given:
or 
or 
Z
or 
Z
7. 
Ans. Given:
or 
or 
Z
or 
Z
or 
Z
8. 
Ans. Given:
or 
or 
or 
Z
9. 
Ans. Given:
or 
or 
Z
or 
Z
or 
Z