Difference and Sum of Angles Must do before Lesson 64 L. Marizza A. Bailey

Assume we are on the unit circle. Difference of Angles α θ Assume we are on the unit circle.

Assume we are on the unit circle. Difference of Angles α - θ α θ Assume we are on the unit circle.

Assume we are on the unit circle. Difference of Angles ( cos (α – θ) ,sin (α – θ) ) ( cos (α) ,sin (α) ) ( cos (θ) ,sin (θ) ) α - θ α θ Assume we are on the unit circle.

Assume we are on the unit circle. Difference of Angles ( cos (α – θ) ,sin (α – θ) ) ( cos (α) ,sin (α) ) ( cos (θ) ,sin (θ) ) α - Ө α - θ (1,0) Assume we are on the unit circle.

Distances are the same

The sum of angles Write all four sum and difference of angle identities.