Which expression completes the identity cos u sin vu? OA } (sin(u + v) + sin(x – v)]
OB. } [008(– v) + cos(x + v)]
OC [sin(x + v) – sin(x – v)]
OD. } [costi – v) – cos(u + v)]
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see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

the anwser is d) 75°

step-by-step explanation: