The numbers that are added to get the coefficient of the middle term are the of the last term. Select one:

a.
products

b.
inverse

c.
exponents

d.
addends

e.
factors

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