We know on the regular cosine graph, it decreases from 0 to pi. so, we need to set 0 as y.0 = 4 cos(2x-pi)0 = cos(2x-pi)2x-pi = pix = piwe already know the answer, but do pi on your own!
Answer from: Quest
answer is 60/15 use pemdas and simplify the top and bottom. then divde by 5 and
final answer 12/3
final simplified 4/1
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