What is the area of the shaded part of the circle that has a diameter of 8 mm? Use 3.14 for 4 mm
8 mm
O 16mm?
O 32mm?
O 34 24 mm
50.24 mm?

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b