Yr 2 Pure

Question 1

degrees to radians

Answer 1

a*π/180

Question 2

radians to degrees

Answer 2

a*180/π

Question 3

sinx = 1/2

Answer 3

x = 30 deg
x = π/6 rad

Question 4

cosx = √3/2

Answer 4

x = 30 deg
x = π/6 rad

Question 5

tanx = √3/3

Answer 5

x = 30 deg
x = π/6 rad

Question 6

sinx = √2/2

Answer 6

x = 45 deg
x = π/4 rad

Question 7

cosx = √2/2

Answer 7

x = 45 deg
x = π/4 rad

Question 8

tanx = 1

Answer 8

x = 45 deg
x = π/4 rad

Question 9

sinx = = √3/2

Answer 9

x = 60 deg
x = π/3 rad

Question 10

cosx = 1/2

Answer 10

x = 60 deg
x = π/3 rad

Question 11

tanx = √3

Answer 11

x = 60 deg
x = π/3 rad

Question 12

arc length formula

Answer 12

degrees = ϴ/360 * 2πr
radians = rϴ

Question 13

sector area formula

Answer 13

degrees = ϴ/360 * πr^2
radians = 1/2r^2ϴ

Question 14

small angle approximation sin and tan

Answer 14

ϴ = sinϴ = tanϴ

Question 15

small angle approximation cos

Answer 15

cosϴ = 1 - 1/2ϴ^2

Question 16

inputs of a function

Answer 16

domain

Question 17

outputs of a function

Answer 17

range

Question 18

composite functions

Answer 18

work from inside out

Question 19

a composite function has a domain…

Answer 19

of the first function

Question 20

for an inverse function to exist

Answer 20

the function must be one-to-one

Question 21

geometric relationship between inverse function and function

Answer 21

reflected in line y=x (domain and range swap)