Which sequence is a geometric sequence with a negative common ratio? А
-4,-8, -16, -32,...
В B.
-8, -4,-2,-)
с
5.-10, -25,-40,...
D6, -3, -1..
ОА
Ов
Ос
OD

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