Trig Graphs

y = sin x

(0,0) (π/2, 1) (π, 0) (3π/2, -1) (2π, 0)

y = cos x

(0, 1) (π/2, 0) (π, -1) (3π, 0) (2π,1)

y = tan x

(-π/2, -) (-π/4, -1) (0, 0) (π/4, 1) (π/2, -)

amplitude

|a|

period

2π/b

phase shift

-c/b

vertical shift

d

a

(highest value - lowest value)/2

b

2π/period

c

-(horizontal shift)(b)

d

(highest value + lowest value)/2