Unit Circle

Question 1

cos(11∏/6)

Answer 1

Also cos(330). It equals √3/2.

Question 2

cos(∏)

Answer 2

Also cos(180). It equals -1.

Question 3

cos(∏/4)

Answer 3

Also cos(45). It equals √2/2.

Question 4

cos(∏/2)

Answer 4

Also cos(90). It equals 0.

Question 5

sin(∏)

Answer 5

Also sin(180). It equals 0.

Question 6

cos(2∏/3)

Answer 6

Also cos(120). It equals -1/2.

Question 7

sin(7∏/4)

Answer 7

Also sin(315). It equals -√2/2.

Question 8

cos(5∏/6)

Answer 8

Also cos(150) It equals -√3/2.

Question 9

sin(2∏/3)

Answer 9

Also sin(120). It equals √3/2.

Question 10

cos(∏/6)

Answer 10

Also cos(30). It equals √3/2.

Question 11

sin(11∏/6)

Answer 11

Also sin(330). It equals -1/2.

Question 12

sin(∏/6)

Answer 12

Also sin(30). It equals 1/2.

Question 13

cos(5∏/3)

Answer 13

Also cos(300). It equals 1/2.

Question 14

cos(∏/3)

Answer 14

Also cos(60). It equals 1/2.

Question 15

sin(∏/3)

Answer 15

Also sin(60). It equals √3/2.

Question 16

sin(∏/4)

Answer 16

Also sin(45). It equals √2/2.

Question 17

sin(5∏/4)

Answer 17

Also sin(225). It equals -√2/2.

Question 18

cos(4∏/3)

Answer 18

Also cos(240). It equals -1/2.

Question 19

cos(0)

Answer 19

Also cos (360). It equals 1.

Question 20

sin(5∏/3)

Answer 20

Also sin(300). It equals -√3/2.

Question 21

sin(4∏/3)

Answer 21

Also sin(240). It equals -√3/2.

Question 22

cos(3∏/4)

Answer 22

Also cos(135). It equlals -√2/2.

Question 23

sin(3∏/2)

Answer 23

Also sin(270). It equals -1.

Question 24

sin(5∏/6)

Answer 24

Also sin(150). It equals 1/2.

Question 25

sin(3∏/4)

Answer 25

Also sin(135). It equals √2/2.

Question 26

sin(0)

Answer 26

Also sin (360). It equals 0.

Question 27

sin(7∏/6)

Answer 27

Also sin(210). It equals -1/2.

Question 28

cos(7∏/6)

Answer 28

Also cos(210). It equals -√3/2.

Question 29

cos(3∏/2)

Answer 29

Also cos(270). It equals 0.

Question 30

sin(∏/2)

Answer 30

Also sin(90). It equals 1.

Question 31

cos(5∏/4)

Answer 31

Also cos(225). It equals -√2/2.

Question 32

cos(7∏/4)

Answer 32

Also cos(315). It equals √2/2.

Question 33

tan(0)

Answer 33

Also tan(360). It equals 0.

Question 34

tan(∏/6)

Answer 34

Also tan(30). It equals √3/3

Question 35

tan(