Quiz+6.1+-+6.2+AND+Learn-on-Your+Own+-+6.3+Part+II+(Half-angle+formulas)

After Quiz:

 * Read Pages 492 - 498 (Starting at "Other Variations of the Double-Angle Formulas")
 * Re-work examples #3 - #7
 * Do Page 498 - 500 (23, 13, 1(c), 1(d), 11, 19, 29, 42, 65)
 * YES...I KNOW THAT THESE ARE OUT-OF-ORDER.