trig identities simplifying

24:06

24:19

1:19

1:01

2:57

5:10

7:38

1:10

17:54

کوتاه

کوتاه

کوتاه

کوتاه

7:16

10:48

1:54

10:48

11:37

5:22

6:03

1:01

2:19

17:03

13:01

19:04

23:52

2:00

44:49

9:58

32:34

1:57

2:53

2:57

5:17

12:36

1:36

16:12

3:50

11:23

9:31