Basics of Trig Graphs

shape of a sin graph

sin0

sin90

sin180

sin270

sin360

0

1

0

-1

0

shape of a cos graph

cos0

cos90

cos180

cos270

cos360

1

0

-1

0

1

shape of a tan graph

tan0

tan90

tan180

tan270

tan360

0

UDF

0

UDF

0

Finding the pair of a point on a cos graph

cosθ = cos(360 - θ)

finding the pair of a point on a sin graph

sinθ = sin(180 - θ)

finding the pair of a point on a tan graph

tanθ = tan(θ ± 180)