Trig 19

Question 1

*small angle in radians:
sin x =

Answer 1

x

Question 2

*small angle in radians:
cos x =

Answer 2

(1 - x^2) / 2

Question 3

*small angle in radians:
tan x =

Answer 3

x

Question 4

*sin(A+-B)

Answer 4

sinAcosB +- cosAsinB

Question 5

*cos(A+-B)

Answer 5

cosAcosB -+ sinAsinB

Question 6

*tan(A+-B)

Answer 6

tanA +- tanB / 1 -+ tanAtanB