Yvette has scores of 72 78 66 and 81 on her algebra tests. what score must she make on the final exam in order to pass the course with at least 360 points. the final exam counts as two tests grades

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