Ally bought a bag of gummy bears for $7.98 and a bottle of chamoy for $2.79. She also paid $0.89 in tax. What is the total amount Ally spent? O $10.77 O $11.66 O $5.19 O $4.30​

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