Unit Circle

Question 1

0 degrees

Answer 1

0 radians, sin=0, cos=1, tan=0

Question 2

30 degrees

Answer 2

pi/6 radians, sin=1/2, cos=sqrt3/2, tan=1/sqrt3

Question 3

45 degrees

Answer 3

pi/4 radians, sin=sqrt2/2, cos sqrt2/2, tan=1

Question 4

60 degrees

Answer 4

pi/3 radians, sin=sqrt3/2, cos=1/2, tan=sqrt3

Question 5

90 degrees

Answer 5

pi/2 radians, sin=1, cos 0, tan=undef

Question 6

0 radians

Answer 6

0 degrees, sin=0, cos=1, tan=0

Question 7

pi/6 radians

Answer 7

30 degrees, sin=1/2, cos=sqrt3/2, tan=1/sqrt3

Question 8

pi/4 radians

Answer 8

45 degrees, sin=sqrt2/2, cos sqrt2/2, tan=1

Question 9

pi/3 radians

Answer 9

60 degrees, sin=sqrt3/2, cos=1/2, tan=sqrt3

Question 10

pi/2 radians

Answer 10

90 degrees, sin=1, cos 0, tan=undef

Question 11

sin=0

Answer 11

0 degrees, 0 radians, cos=1, tan=0

Question 12

sin=1/2

Answer 12

30 degrees, pi/6 radians, cos=sqrt3/2, tan=1/sqrt3

Question 13

sin=sqrt2/2

Answer 13

45 degrees, pi/4 radians, cos sqrt2/2, tan=1

Question 14

sin=sqrt3/2

Answer 14

60 degrees, pi/3 radians, cos=1/2, tan=sqrt3

Question 15

sin=1

Answer 15

90 degrees, pi/2 radians, cos 0, tan=undef

Question 16

cos=1

Answer 16

0 degrees, 0 radians, sin=0, tan=0

Question 17

cos=sqrt3/2

Answer 17

30 degrees, pi/6 radians, sin=1/2, tan=1/sqrt3

Question 18

cos=sqrt2/2

Answer 18

45 degrees, pi/4 radians, sin=sqrt2/2, tan=1

Question 19

cos=1/2

Answer 19

60 degrees, pi/3 radians, sin=sqrt3/2, tan=sqrt3

Question 20

cos=0

Answer 20

90 degrees, pi/2 radians, sin=1, tan=undef