Practice Degree ____Radian _____( , )

III

III IV

Degree ____Radian _____( , )

Degree ____Radian _____( , )

Degree ____Radian _____( , )

_______º __π/2_____ rad

__0_____º _______ rad

__60_____º _______ rad

_______º ___π/4____ rad

_30_____º _______ rad

_______º __2π_____ rad

Practice: Unit Circle Use formulas for radians to degrees to fill in the missing values

Periodic Angles

If you are trying to find the value of a trig function for and angle larger than 2π remember that 2π makes one complete rotation and then starts over, so you can subtract 2π from the angle until you get an angle between 0 and 2π

Example:sin 3π = sin 3π – 2π = sin π which is 0 from our unit circle, and trig functions.

Periodic Angles

If you are trying to find the value of a trig function for and angle larger than 2π remember that 2π makes one complete rotation and then starts over, so you can subtract 2π from the angle until you get an angle between 0 and 2π

Practicecos 10π

Csc 7π/2

Assignment #3 pg. 381 21-30 all