Triganometry

Question 1

sin30

Answer 1

1/2

Question 2

sin60

Answer 2

√3/2

Question 3

sin45

Answer 3

1/√2

Question 4

cos30

Answer 4

√3/2

Question 5

cos60

Answer 5

1/2

Question 6

cos45

Answer 6

1/√2

Question 7

tan30

Answer 7

1/√3

Question 8

tan60

Answer 8

√3

Question 9

tan45

Answer 9

1

Question 10

cosine rule

Answer 10

a^2 = b^2 + c^2bcosA

Question 11

sine rule

Answer 11

a/sinA = b/sinB = c/sinC

Question 12

area of non right angles triangles

Answer 12

1/2 x absinC

Question 13

how often does a sin graph repeat

Answer 13

180

Question 14

how often does a cos graph repeat

Answer 14

360

Question 15

how often does tan graph repeat

Answer 15

180

Question 16

sinx/cosx =

Answer 16

tanx

Question 17

sin^2x + cos^2x =

Answer 17

1

Question 18

sin^2x =

Answer 18

1 - cos^2x

Question 19

cos^2x =

Answer 19

1 - sin^2x

Question 20

sin^2x/cos^2x =

Answer 20

tan^2x

Question 21

1/tanx =

Answer 21

cosx/tanx

Question 22

sinx = sin(?)

Answer 22

180 - x

Question 23

cosx = cos(?)

Answer 23

360 - x

Question 24

tanx = tan(?)

Answer 24

x + 180

Question 25

sin2x

Answer 25

2sinxcosx

Question 26

cos2x

Answer 26

cos^2x - sin^2x OR
1 - 2sin^2x OR
2cos^2x - 1

Question 27

tan2x

Answer 27

2tanx / 1 - tan^2x

Question 28

1 + tan^2x

Answer 28

sec^2x

Question 29

1 + cot^2x

Answer 29

cosec^2x

Question 30

sin(a + b)

Answer 30

sinAcosB + cosAsinB

Question 31

sin(a - b)

Answer 31

sinAcosB - cosAsinB

Question 32

cos(a + b)

Answer 32

cosAcosB - sinAsinB

Question 33

cos(a - b)

Answer 33

cosAcosB + sinAsinB

Question 34

tan(a + b)

Answer 34

tanA + tanB /1 - tanAtanB

Question 35

tan(a - b)

Answer 35

tanA - tanB/ 1 + tanAtanB