find the coordinates of the foot of the perpendicular

3:06

کوتاه

2:53

4:33

1:24

کوتاه

4:46

7:28

3:03

3:45

3:41

4:12

2:37

4:32

8:53

5:42

7:46

3:14

3:48

5:30

2:43

2:46

4:08

13:46

4:13

17:51

14:21

10:33

4:21

6:56

17:38

3:19

4:30

1:34

3:30

4:27

5:43

14:44

3:57

4:42