trigonomentry

Question 1

2 pi =

Answer 1

360

Question 2

pi=

Answer 2

180

Question 3

pi/2=

Answer 3

90

Question 4

pi/3=

Answer 4

60

Question 5

pi/4

Answer 5

45

Question 6

pi/6

Answer 6

30

Question 7

small angle aproximations:
sin@=
cos@=
tan@=

Answer 7

in formula booklet

Question 8

sin 30=

Answer 8

1/2

Question 9

sin 60=

Answer 9

(root 3 )/2

Question 10

sin 45 =

Answer 10

1/root 2

Question 11

cos 30=

Answer 11

(root 3)/2

Question 12

cos 60=

Answer 12

1/2

Question 13

cos 45=

Answer 13

1/ root 2

Question 14

tan 30=

Answer 14

1/ root 3

Question 15

tan 60=

Answer 15

root 3

Question 16

tan 45=

Answer 16

1

Question 17

tan @ =

Answer 17

sin @ / cos@

Question 18

solving for solutions of sin @

Answer 18

1st sin-1(@)
2nd 180-1st
3rd +- 360

Question 19

solving solutions for cos@

Answer 19

1st cos-1(@)
2nd 360 - 1st
3rd +- 360

Question 20

solving solutions for tan@

Answer 20

1st tan-1(@)
2nd and 3rd +- 180

Question 21

cosec@ =

Answer 21

1/sin@

Question 22

1/cosec@=

Answer 22

sin@

Question 23

sec@ =

Answer 23

1/cos@

Question 24

1/sec@ =

Answer 24

cos@

Question 25

cot@ =

Answer 25

1/tan@ = cos@/sin@

Question 26

co-function: sin@ =

Answer 26

cos(90-@)

Question 27

co fucntion: cos@ =

Answer 27

sin(90-@)

Question 28

sin^2+cos^2 =

Answer 28

1

Question 29

sec^2@=

Answer 29

1+tan^2@

Question 30

cosec^2@ =

Answer 30

1+cot^2@

Question 31

addtion formula

Answer 31

in formula booklet

Question 32

sin2@ =

Answer 32

2sin@cos@

Question 33

cos2@ =

Answer 33

2cos^2@-1
1-2sin^2@
cos^2 - sin^2@

Question 34

tan2@ =

Answer 34

2tan@/1-tan^2@

Question 35

sin^2 @ =

Answer 35

1/2 -1/2 cos2@
rearrange double angle formula, useful in integration

Question 36

cos^2@=

Answer 36

1/2 +1/2cos2@
rearrange double angle formula useful in integration

Question 37

in Rcos(@+&) if Rcos@ = a and Rsin@ = b then

Answer 37

r= root(a^2 + b^2)
tan& = b/a