Answer:
-0.47
Step-by-step explanation:
I don’t understand the question so I answer in two ways
If this is supposed to be
Then this can simply be reduced to
by the double angle formula for cosine
You are multiply by -2.
term 1: 5
term 2: -10
terms 3: 20
term 4: -40
term 5: 80
term 6: -160
term 7: 320
term 8: -640
So, the 8th term is -640. Hope this helps, please mark brainliest and have an amazing day!
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