Today, we discussed the derivations for special angles within a unit circle on the Cartesian plane. The special angles we found were:
cos( π/4) = √2/2
sin ( π/4) = √2/2
cos ( π/6) = √3/2
sin ( π/6) = 1/2
cos ( π/3) = 1/2
sin ( π/3) = √3/2
We can use these angles to help us solve for the coordinates of some point P on the circle.
For homework, please complete #1, 2, 3, 6, 8, 10a and 11 of page 188 in the Alberta Mathematics 12 text (red book). This homework is due for Thursday, May 7, 2009.