1. 1
arccos  =
2

2. Answer
π
= ± 2π
3
5π
= ± 2π
3

3.  3π 
tan  =
 4 

4. Answer
= -1

5. tan0 =

6. Answer
=0

7. sin∏ =

8. Answer
=0

9. π 
tan   =
6

10. Answer
1 3
=
3 3

11.  7π 
cos =
 6 

12. Answer
3
=−
2

13.  5π 
sin  =
 3 

14. Answer
3
=−
2

15. π 
sin   =
2

16. Answer
=1

17. π 
tan   =
2

18. Answer
= undefined
VA at 90 degrees

19.  3
arctan −
 3 
=
 

20. Answer
 3
= tan  −
−1

 3 
 
5π
= ±π
6

21. cos∏ =

22. Answer
= -1

23. sin0 =

24. Answer
=0

25.  3π 
cos =
 2 

26. Answer
=0

27.  11π 
sin  =
 6 

28. Answer
1
=−
2

29. cos0 =

30. Answer
=1

31. π 
tan   =
3

32. Answer
= 3

33. Does ln(x +1) =
2
lnx2 + ln1 = 2lnx + 0 ?

34. Answer
NO!
It is the natural log of that
quantity.