evaluate inverse trig functions

5:22

6:03

7:16

24:19

2:57

1:10

10:48

3:19

32:34

1:57

5:17

5:09

7:32

44:49

9:58

2:53

2:57

12:36

1:36

7:31

6:44

1:15:22

9:45

16:12

3:50

11:23

3:45

9:31