- Audrey McLaren
This applet is meant to accompany the voicethread lesson on Related Angle Identities. 1. For slides 3-25, click the "I want to see and - checkbox. Move the black point around the unit circle, and as you do, watch the coordinates of the two angles to detect how cos and cos(-) are related, as well as sin and sin(-). 2. For slides 31-36, check the second box. 3. For slides 58-73, check the second box.